부산대학교 도서관

Hanning, U; Bechstein, M; Kaesmacher, J; Boulouis, G; Chapot, R; Andersson, T; Boccardi, E; Psychogios, M; Cognard, C; Lascuevas, MD; Rodrigues, M; Caamano, IR; Gargalas, S; Simonato, D; Zupancic, V; Daller, C; Meyer, L; Broocks, G; Guerreiro, H; Fiehler, J; Martinez-Galdamez, M; Kalousek, V

Clinical neuroradiology. 33(1):137-145

Lauzier, David C.; Vellimana, Ananth; Kansagra, Akash P.; Promelle, Veronique; Muthusami, Prakash; Kletke, Stephanie N.; Shaikh, Furqan; Gallie, Brenda L.; Mallipatna, Ashwin

Journal of NeuroInterventional Surgery (J NEUROINTERVENT SURG), Jun2022; 14(6): 1-2. (3p)

Charidimou, A; Zonneveld, HI; Shams, S; Kantarci, K; Shoamanesh, A; Hilal, S; Yates, PA; Boulouis, G; Na, HK; Pasi, M; Biffi, A; Chai, YL; Chong, JR; Wahlund, LO; Clifford, JR; Chen, C; Gurol, ME; Goldstein, JN; Na, DL; Barkhof, F; Seo, SW; Rosand, J; Greenberg, SM; Viswanathan, A

Neurology. 93(4):E358-E371

Darsaut TE; 1Department of Surgery, Division of Neurosurgery, University of Alberta Hospital, Edmonton, Alberta, Canada.; Gentric JC; 2Department of Interventional Neuroradiology, CHU Cavale Blanche, Inserm, UMR 1304 (GETBO), Brest, France.; Heppner J; 1Department of Surgery, Division of Neurosurgery, University of Alberta Hospital, Edmonton, Alberta, Canada.; Lopez C; 2Department of Interventional Neuroradiology, CHU Cavale Blanche, Inserm, UMR 1304 (GETBO), Brest, France.; Jabre R; 3Département de Chirurgie, Service de Neurochirurgie, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec.; Iancu D; 4Département de Radiologie, Service de Neuroradiologie Interventionnelle, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec.; Roy D; 4Département de Radiologie, Service de Neuroradiologie Interventionnelle, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec.; Weill A; 4Département de Radiologie, Service de Neuroradiologie Interventionnelle, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec.; Bojanowski MW; 4Département de Radiologie, Service de Neuroradiologie Interventionnelle, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec.; Chaalala C; 4Département de Radiologie, Service de Neuroradiologie Interventionnelle, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec.; Comby PO; 4Département de Radiologie, Service de Neuroradiologie Interventionnelle, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec.; Roberge D; 5Département de Radio-oncologie, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec, Canada.; Cognard C; 6Service de Neuroradiologie Diagnostique et Thérapeutique, Hôpital Pierre Paul Riquet, Toulouse.; Januel AC; 6Service de Neuroradiologie Diagnostique et Thérapeutique, Hôpital Pierre Paul Riquet, Toulouse.; Sabatier JF; 7Service de Neurochirurgie, Hôpital Pierre Paul Riquet, Toulouse.; Desal H; 8Service de Neuroradiologie Diagnostique et Interventionnelle, Nantes Université, CHU Nantes.; Roualdes V; 9Department of Neurosurgery, CHU de Nantes.; Ferre JC; 10Service d'Imagerie Médicale, CHU de Rennes.; Alias Q; 10Service d'Imagerie Médicale, CHU de Rennes.; Papagiannaki C; 11Département de Neuroradiologie Interventionnelle, CHU Rouen.; Derrey S; 12Department of Neurosurgery, Rouen University Hospital, Rouen.; Smajda S; 13Service de Neuroradiologie Interventionnelle, Hôpital Fondation Adolphe de Rothschild, Paris.; Aldea S; 14Service de Neurochirurgie, Hôpital Fondation Adolphe de Rothschild, Paris.; Gaberel T; 15Service de Neurochirurgie, CHU de Caen, France.; Barbier C; 16Service de Neuroradiologie Interventionnelle, CHU de Caen.; Barreau X; 17Service de Neuroradiologie Interventionnelle, CHU de Bordeaux.; Marnat G; 17Service de Neuroradiologie Interventionnelle, CHU de Bordeaux.; Jecko V; 18Service de Neurochirurgie, CHU de Bordeaux.; Anxionnat R; 19Service de Neuroradiologie Diagnostique et Thérapeutique, CHRU de Nancy, Université de Lorraine, Nancy.; Merlot I; 20Service de Neurochirurgie, CHU de Nancy, France.; Nguyen TN; 21Department of Neurology and Radiology, Boston Medical Center, Boston, Massachusetts.; Abdalkader M; 21Department of Neurology and Radiology, Boston Medical Center, Boston, Massachusetts.; Dumot C; 22Service de Neurochirurgie, CHU Pierre Wertheimer, Lyon.; Riva R; 23Service de Neurologie fonctionnelle, CHU Pierre Wertheimer, Lyon.; Graillon T; 24Department of Neurosurgery, Marmara Institute, La Timone Hospital, Aix Marseille University, INSERM, APHM, MMG UMR1251, Marseille.; Troude L; 24Department of Neurosurgery, Marmara Institute, La Timone Hospital, Aix Marseille University, INSERM, APHM, MMG UMR1251, Marseille.; Kerleroux B; 25Service de Neuroradiologie Interventionnelle, CHU de Marseille.; Ollivier I; 26Service de Neurochirurgie, CHU de Strasbourg.; Beaujeux R; 27Service de Neuroradiologie Interventionnelle, CHU de Strasbourg.; Boulouis G; 28Diagnostic and Interventional Neuroradiology, CIC-IT 1415, CHRU de Tours, INSERM 1253 iBrain, Tours, Centre Val de Loire.; Planty-Bonjour A; 29Service de Neurochirurgie, CHU de Tours.; Spelle L; 30Service de Neuroradiologie Interventionnelle, Hôpital Bicêtre, Le Kremlin-Bicêtre.; Chalumeau V; 30Service de Neuroradiologie Interventionnelle, Hôpital Bicêtre, Le Kremlin-Bicêtre.; Naggara O; 31Service de Neuroradiologie, CHU Sainte-Anne, Paris.; Lefevre PH; 32Service de Neuroradiologie Interventionnelle, CHU de Montpellier.; Le Corre M; 33Service de Neurochirurgie, CHU de Montpellier.; Shotar E; 34Service de Neuroradiologie Interventionnelle, Hôpital Pitié-Salpêtrière, Paris, France.; Carlson AP; 35Department of Neurosurgery, University of New Mexico School of Medicine, Albuquerque, New Mexico.; Biondi A; 36Service de Neuroradiologie Interventionnelle, CHU de Besançon.; Thines L; 37Service de Neurochirurgie, Université de Franche-Comté, CHU Besançon, France.; Tawk RG; 38Department of Neurological Surgery, Mayo Clinic, Jacksonville.; Huynh T; 39Department of Radiology, Mayo Clinic, Jacksonville, Florida.; Fahed R; 40Section of Interventional Neuroradiology, and Division of Neurology, The Ottawa Hospital-Ottawa Hospital Research Institute and University of Ottawa, Ontario, Canada.; Findlay JM; 1Department of Surgery, Division of Neurosurgery, University of Alberta Hospital, Edmonton, Alberta, Canada.; Chabert E; 41Service de Neuroradiologie Interventionnelle, CHU de Clermont-Ferrand, France.; Zehr J; 42Department of Mathematics and Statistics, Université de Montréal, Québec, Canada.; Gevry G; 4Département de Radiologie, Service de Neuroradiologie Interventionnelle, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec.; Klink R; 4Département de Radiologie, Service de Neuroradiologie Interventionnelle, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec.; Viard G; 43Clinical Investigation Center, CHU Brest, Hôpital Cavale Blanche, Brest; and.; Magro E; 44Department of Neurosurgery, Brest University Hospital, Hôpital La Cavale Blanche, Inserm, UMR 1101, Université de Bretagne Occidentale, Brest, France.; Raymond J; 4Département de Radiologie, Service de Neuroradiologie Interventionnelle, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Québec.

Publisher: American Association of Neurological Surgeons Country of Publication: United States NLM ID: 0253357 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1933-0693 (Electronic) Linking ISSN: 00223085 NLM ISO Abbreviation: J Neurosurg Subsets: MEDLINE

Anadani M; 1Department of Neuroscience, Intent Medical Group, Endeavor Health, Arlington Heights, Illinois.; Gory B; 2Department of Diagnostic and Therapeutic Neuroradiology, University Hospital of Nancy, INSERM U1254, Nancy, France.; Olivot JM; 3Department of Neurology, CHU Toulouse, France.; Bourcier R; 4Department of Diagnostic and Therapeutic Neuroradiology, University Hospital of Nantes, France.; Consoli A; 5Department of Diagnostic and Therapeutic Neuroradiology, Hôpital Foch Suresnes FR, University of Versailles Saint Quentin-en-Yvelines, Versailles, France.; Boulouis G; 6Department of Neuroradiology, Tours University Hospital, Tours, France.; Janot K; 6Department of Neuroradiology, Tours University Hospital, Tours, France.; Pop R; 7Interventional Neuroradiology, University Hospitals Strasbourg, France.; Desilles JP; 8Department of Interventional Neuroradiology, Fondation Ophtalmologique A. De Rothschild, Paris, France.; Hamoud L; 9Department of Healthcare administration, Northwestern University, Chicago, Illinois.; Mazighi M; 8Department of Interventional Neuroradiology, Fondation Ophtalmologique A. De Rothschild, Paris, France.; Lapergue B; 10Department of Neurology, Hôpital Foch Suresnes FR, University of Versailles Saint Quentin-en-Yvelines, Versailles, France.; Marnat G; 11Department of Diagnostic and Interventional Neuroradiology, University Hospital of Bordeaux, France; and.; Finitsis S; 12Aristotle University of Thessaloniki, Ahepa Hospital, Thessaloniki, Greece.

Publisher: American Association of Neurological Surgeons Country of Publication: United States NLM ID: 0253357 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1933-0693 (Electronic) Linking ISSN: 00223085 NLM ISO Abbreviation: J Neurosurg Subsets: MEDLINE

Lognon, P.; Gariel, F.; Marnat, G.; Darcourt, J.; Constant dit Beaufils, P.; Burel, J.; Shotar, E.; Hak, J. F.; Fauché, C.; Kerleroux, B.; Guédon, A.; Ognard, J.; Forestier, G.; Pop, R.; Paya, C.; Veyrières, J. B.; Sporns, P.; Girot, J. B.; Zannoni, R.; Zhu, F.; Crespy, A.; L’Allinec, V.; Mihoc, D.; Rouchaud, A.; Gentric, J. C.; Ben Hassen, W.; Raynaud, N.; Testud, B.; Clarençon, F.; Kaczmarek, B.; Bourcier, R.; Bellanger, G.; Boulouis, G.; Janot, Kevin

Neuroradiology: A Journal Dedicated to Neuroimaging and Interventional Neuroradiology. 64(12):2363-2371

Costalat V; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Jovin TG; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Albucher JF; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Cognard C; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Henon H; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Nouri N; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Gory B; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Richard S; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Marnat G; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Sibon I; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Di Maria F; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Annan M; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Boulouis G; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Cardona P; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Obadia M; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Piotin M; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Bourcier R; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Guillon B; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Godard S; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Pasco-Papon A; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Eker OF; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Cho TH; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Turc G; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Naggara O; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Velasco S; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Lamy M; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Clarençon F; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Alamowitch S; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Renu A; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Suissa L; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Brunel H; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Gentric JC; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Timsit S; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Lamy C; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Chivot C; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Macian-Montoro F; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Mounayer C; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Ozkul-Wermester O; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Papagiannaki C; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Wolff V; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Pop R; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Ferrier A; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Chabert E; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Ricolfi F; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Béjot Y; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Lopez-Cancio E; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Vega P; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Spelle L; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Denier C; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Millán M; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Arenillas JF; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Mazighi M; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Houdart E; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Del Mar Freijo M; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Duhamel A; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Sanossian N; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Liebeskind DS; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Labreuche J; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Lapergue B; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.; Arquizan C; From the Department of Neuroradiology, Hôpital Gui de Chauliac, Montpellier (V.C.), the Departments of Neurology (J.F. Albucher) and Neuroradiology (C. Cognard), Hôpital Pierre Paul Riquet, and Toulouse Clinical Investigations Centers 1436 (J.F. Albucher, C. Cognard), Toulouse, the Departments of Neurology (H.H.) and Neuroradiology (N.N.), Hôpital Salengro, and the Department of Biostatistics, Centre Hospitalier Universitaire (CHU) Lille (A.D., J.L.), Lille, the Department of Neuroradiology, Hôpital central, L'unité d'Imagerie Adaptative Diagnostique et Interventionnelle, INSERM Unité 1254 (B. Gory), and the Department of Neurology, Hôpital central, Centre d'investigation clinique Plurithématique 1433, INSERM Unité 1116 (S.R.), Nancy, the Departments of Neuroradiology (G.M.) and Neurology (I.S.), Hôpital Pellegrin, Bordeaux, the Department of Neuroradiology, Hôpital Foch, Suresnes (F.D.M.), the Departments of Neurology (M.A.) and Neuroradiology (G.B.), Hôpital Bretonneau, Tours, the Departments of Neurology (M.O.) and Neuroradiology (M.P.), Hôpital Fondation Adolphe de Rothschild, the Departments of Neurology (G.T.) and Neuroradiology (O.N.), Groupe Hospitalier Universitaire Paris, Centre Hospitalier Sainte-Anne, INSERM Unité 1266, the Departments of Neuroradiology (F.C.) and Neurology (S.A.), Hôpital La Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (AP-HP), the Departments of Neuroradiology (L. Spelle) and Neurology (C.D.), Hôpital Bicêtre, AP-HP, the Departments of Neurology (M. Mazighi) and Neuroradiology (E.H.), Hôpital Lariboisière AP-HP, and INSERM Unité 1266 (C.A.), Paris, the Department of Neuroradiology, Nantes Université, CHU Nantes (R.B.), INSERM Unité Mixte de Recherche 1087, Centre National de la Recherche Scientifique, University of Nantes, L'institut du Thorax (R.B.), and Clinique Neurologique, Hôpital G.R. Laennec CHU Nantes (B. Guillon), Nantes, the Departments of Neurology (S.G.) and Neuroradiology (A.P.-P.), CHU d'Angers, Angers, the Departments of Neuroradiology (O.F.E.) and Neurology (T.-H.C.), Hospices Civils de Lyon, Groupement Hospitalier Est Hôpital Pierre Wertheimer, Lyon, the Departments of Neuroradiology (S.V.) and Neurology (M.L.), CHU Poitiers, Site de La Milétrie, Poitiers, the Stroke Unit (L. Suissa) and the Department of Neuroradiology (H.B.), Assistance Publique-Hôpitaux de Marseille, Hôpital de la Timone, Marseille, the Departments of Neuroradiology (J.-C.G.) and Neurology (S.T.), Centre Hospitalier Régional Universitaire (CHRU) Brest, Hôpital de la Cavale Blanche, Brest, the Departments of Neurology (C.L.) and Neuroradiology (C. Chivot), CHU Amiens-Picardie, Amiens, the Departments of Neurology (F.M.-M.) and Neuroradiology (C.M.), CHU Limoges, Dupuytren, Limoges, the Departments of Neurology (O.O.-W.) and Neuroradiology (C.P.), CHU Rouen, Rouen, the Departments of Neurology (V.W.) and Neuroradiology (R.P.), CHRU Strasbourg, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, the Departments of Neurology (A.F.) and Neuroradiology (E.C.), CHU Clermont-Ferrand, Hôpital Gabriel Montpied, Clermont-Ferrand, the Departments of Neuroradiology (F.R.) and Neurology (Y.B.), CHU Dijon-Bourgogne, Hôpital François Mitterrand, Dijon, and the Department of Neurology, Hôpital Foch, Suresnes (B.L.), and the Department of Neurology, Hôpital Gui de Chauliac, Montpellier (C.A.) - all in France; Cooper Neurological Institute and Cooper Medical School of Rowan University, Camden, NJ (T.G.J.); the Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat (P.C.), and the Department of Neurology, Hospital Clínic de Barcelona (A.R.), Barcelona, the Department of Radiology, Hospital Universitario Central de Asturias, Oviedo (E.L.-C., P.V.), the Department of Neurology Hospital Germans Trias i Pujol, Badalona (M. Millán), Hospital Clínico Universitario de Valladolid, Valladolid (J.F. Arenillas), and the Department of Neurology, Hospital Universitario Cruces, Baracaldo (M.M.F.) - all in Spain; and the Department of Neurology, University of Southern California (N.S.), and the Department of Neurology, UCLA (D.S.L.) - both in Los Angeles.

Publisher: Massachusetts Medical Society Country of Publication: United States NLM ID: 0255562 Publication Model: Print Cited Medium: Internet ISSN: 1533-4406 (Electronic) Linking ISSN: 00284793 NLM ISO Abbreviation: N Engl J Med Subsets: MEDLINE

In Journal of Emergency Medicine January 2017 52(1):129-130

Forestier G; Neuroradiology Department, University Hospital of Limoges, Dupuytren, France.; Hanning U; Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf Hamburg, Hamburg, Germany.; Kaesmacher J; University Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.; Boulouis G; Interventional Neuroradiology, University Hospital of Tours, Tours, France.; Zeleňák K; Department of Radiology, Comenius University's Jessenius Faculty of Medicine and University Hospital, Martin, Slovakia.; Januel AC; Department of Interventional Neuroradiology, CHU Toulouse, Toulouse, Midi-Pyrénées, France.; Kulcsár Z; Department of Neuroradiology, Zurich University Hospital, Zurich, Switzerland.; Fiehler J; Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf Hamburg, Hamburg, Germany.; Rouchaud A; Neuroradiology Department, University Hospital of Limoges, Dupuytren, France.; Université de Limoges, XLIM CNRS, UMR 7252, Limoges, France.

Publisher: SAGE Publications Ltd Country of Publication: England NLM ID: 101688446 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 2396-9881 (Electronic) Linking ISSN: 23969873 NLM ISO Abbreviation: Eur Stroke J Subsets: MEDLINE

Mainguy R; Department of Neuroradiology, CHRU de Tours, Tours, France.; Crombe A; IMADIS Groupe, Lyon, France; Department of Radiology, Pellegrin University Hospital, Bordeaux, France; 'Sarcotarget' team, BRIC INSERM U1312 and Bordeaux University, Bordeaux France.; Seux M; IMADIS Groupe, Lyon, France.; Bailleux J; IMADIS Groupe, Lyon, France.; Delorme B; IMADIS Groupe, Lyon, France.; Pasi M; Department of Neurology, CHRU de Tours, France.; Cottier JP; Department of Neuroradiology, CHRU de Tours, Tours, France; CIC-IT 1415, CHRU de Tours, INSERM 1253 iBrain, Tours, France.; Boulouis G; Department of Neuroradiology, CHRU de Tours, Tours, France; CIC-IT 1415, CHRU de Tours, INSERM 1253 iBrain, Tours, France.; Gorincour G; IMADIS Groupe, Lyon, France; Clinique Bouchard, ELSAN, Marseille, France. Electronic address: g.gorincour@imadis-groupe.fr.

Publisher: Masson Country of Publication: France NLM ID: 7705086 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 0150-9861 (Print) Linking ISSN: 01509861 NLM ISO Abbreviation: J Neuroradiol Subsets: MEDLINE