학술논문
Evaluation of intravascular contrast media transit times in coronary computed tomography angiography.
Document Type
Academic Journal
Author
Borges RR; Hospital Santa Marta, Brasília, DF, Brazil.; Morato TN; Radiolinea Centro de Imagens, Brasília, DF, Brazil.; Universidade de Brasília (UnB), Brasília, DF, Brazil.; Bezerra ASA; Hospital Santa Marta, Brasília, DF, Brazil.; Universidade de Brasília (UnB), Brasília, DF, Brazil.; Dias BA; Hospital Santa Marta, Brasília, DF, Brazil.; Reinaux JCF; Hospital Santa Marta, Brasília, DF, Brazil.; Monte GU; Instituto de Cardiologia do Distrito Federal (ICDF), Brasília, DF, Brazil.; Farage L; Radiolinea Centro de Imagens, Brasília, DF, Brazil.; Universidade de Brasília (UnB), Brasília, DF, Brazil.; Instituto de Cardiologia do Distrito Federal (ICDF), Brasília, DF, Brazil.; Centro Universitário Euroamericano (Unieuro), Brasília, DF, Brazil.
Source
Publisher: Colegio Brasileiro De Radiologia Country of Publication: Brazil NLM ID: 1305000 Publication Model: Print Cited Medium: Print ISSN: 0100-3984 (Print) Linking ISSN: 01003984 NLM ISO Abbreviation: Radiol Bras Subsets: PubMed not MEDLINE
Subject
Language
English
ISSN
0100-3984
Abstract
Objective: To measure the transit times (TTs) of contrast agents among the injection site (antecubital vein), superior vena cava, pulmonary trunk, and ascending aorta, in coronary computed tomography angiography (CTA) examinations of outpatients with no history of cardiovascular or lung disease, thus defining reference values for those TTs.
Materials and Methods: The contrast TTs from the injection site (antecubital vein) to the superior vena cava, from the superior vena cava to the pulmonary trunk, and from the pulmonary trunk to the ascending aorta were measured by monitoring contrast enhancement in real time (bolus tracking). Cardiac output was measured by the geometric method during the CTA examination and was correlated with the contrast TT.
Results: Forty-three individuals were analyzed. The mean contrast TT was 13.1 s overall (from the antecubital vein to the ascending aorta), 3.0 s from the superior vena cava to the pulmonary trunk, and 7.2 s from the pulmonary trunk to the ascending aorta. There was a tendency toward a correlation between contrast TT and cardiac output ( p = 0.055).
Conclusion: The reference values established here for contrast TTs among the superior vena cava, pulmonary trunk, and ascending aorta will serve as a basis for clinical evaluation.
Materials and Methods: The contrast TTs from the injection site (antecubital vein) to the superior vena cava, from the superior vena cava to the pulmonary trunk, and from the pulmonary trunk to the ascending aorta were measured by monitoring contrast enhancement in real time (bolus tracking). Cardiac output was measured by the geometric method during the CTA examination and was correlated with the contrast TT.
Results: Forty-three individuals were analyzed. The mean contrast TT was 13.1 s overall (from the antecubital vein to the ascending aorta), 3.0 s from the superior vena cava to the pulmonary trunk, and 7.2 s from the pulmonary trunk to the ascending aorta. There was a tendency toward a correlation between contrast TT and cardiac output ( p = 0.055).
Conclusion: The reference values established here for contrast TTs among the superior vena cava, pulmonary trunk, and ascending aorta will serve as a basis for clinical evaluation.