학술논문
Total-Body Multiparametric PET Quantification of 18 F-FDG Delivery and Metabolism in the Study of Coronavirus Disease 2019 Recovery.
Document Type
Academic Journal
Author
Wang Y; Department of Radiology, Davis Medical Center, University of California, Sacramento, California; yrdwang@ucdavis.edu.; Department of Biomedical Engineering, University of California, Davis, Davis, California; and.; Nardo L; Department of Radiology, Davis Medical Center, University of California, Sacramento, California.; Spencer BA; Department of Radiology, Davis Medical Center, University of California, Sacramento, California.; Department of Biomedical Engineering, University of California, Davis, Davis, California; and.; Abdelhafez YG; Department of Radiology, Davis Medical Center, University of California, Sacramento, California.; Nuclear Medicine Unit, South Egypt Cancer Institute, Assiut University, Assiut, Egypt.; Li EJ; Department of Biomedical Engineering, University of California, Davis, Davis, California; and.; Omidvari N; Department of Biomedical Engineering, University of California, Davis, Davis, California; and.; Chaudhari AJ; Department of Radiology, Davis Medical Center, University of California, Sacramento, California.; Badawi RD; Department of Radiology, Davis Medical Center, University of California, Sacramento, California.; Department of Biomedical Engineering, University of California, Davis, Davis, California; and.; Jones T; Department of Radiology, Davis Medical Center, University of California, Sacramento, California.; Cherry SR; Department of Radiology, Davis Medical Center, University of California, Sacramento, California.; Department of Biomedical Engineering, University of California, Davis, Davis, California; and.; Wang G; Department of Radiology, Davis Medical Center, University of California, Sacramento, California.
Source
Publisher: Society of Nuclear Medicine Country of Publication: United States NLM ID: 0217410 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1535-5667 (Electronic) Linking ISSN: 01615505 NLM ISO Abbreviation: J Nucl Med Subsets: MEDLINE
Subject
Language
English
Abstract
Conventional whole-body static 18 F-FDG PET imaging provides a semiquantitative evaluation of overall glucose metabolism without insight into the specific transport and metabolic steps. Here we demonstrate the ability of total-body multiparametric 18 F-FDG PET to quantitatively evaluate glucose metabolism using macroparametric quantification and assess specific glucose delivery and phosphorylation processes using microparametric quantification for studying recovery from coronavirus disease 2019 (COVID-19). Methods: The study included 13 healthy subjects and 12 recovering COVID-19 subjects within 8 wk of confirmed diagnosis. Each subject had a 1-h dynamic 18 F-FDG scan on the uEXPLORER total-body PET/CT system. Semiquantitative SUV and the SUV ratio relative to blood (SUVR) were calculated for different organs to measure glucose utilization. Tracer kinetic modeling was performed to quantify the microparametric blood-to-tissue 18 F-FDG delivery rate [Formula: see text] and the phosphorylation rate k 3 , as well as the macroparametric 18 F-FDG net influx rate ([Formula: see text]). Statistical tests were performed to examine differences between healthy subjects and recovering COVID-19 subjects. The effect of COVID-19 vaccination was also investigated. Results: We detected no significant difference in lung SUV but significantly higher lung SUVR and [Formula: see text] in COVID-19 recovery, indicating improved sensitivity of kinetic quantification for detecting the difference in glucose metabolism. A significant difference was also observed in the lungs with the phosphorylation rate k 3 but not with [Formula: see text], which suggests that glucose phosphorylation, rather than glucose delivery, drives the observed difference of glucose metabolism. Meanwhile, there was no or little difference in bone marrow 18 F-FDG metabolism measured with SUV, SUVR, and [Formula: see text] but a significantly higher bone marrow [Formula: see text] in the COVID-19 group, suggesting a difference in glucose delivery. Vaccinated COVID-19 subjects had a lower lung [Formula: see text] and a higher spleen [Formula: see text] than unvaccinated COVID-19 subjects. Conclusion: Higher lung glucose metabolism and bone marrow glucose delivery were observed with total-body multiparametric 18 F-FDG PET in recovering COVID-19 subjects than in healthy subjects, implying continued inflammation during recovery. Vaccination demonstrated potential protection effects. Total-body multiparametric PET of 18 F-FDG can provide a more sensitive tool and more insights than conventional whole-body static 18 F-FDG imaging to evaluate metabolic changes in systemic diseases such as COVID-19.
(© 2023 by the Society of Nuclear Medicine and Molecular Imaging.)
(© 2023 by the Society of Nuclear Medicine and Molecular Imaging.)