Difference in arterial FDG accumulation in healthy study participants between digital PET/CT and standard PET/CT

• Published in: Annals of nuclear medicine 2024-02, Vol.38 (2), p.96-102
• Main Authors: Nitta, Noriko, Yoshimatsu, Rika, Iwasa, Hitomi, Nakaji, Kousuke, Miyatake, Kana, Nishimori, Miki, Matsumoto, Tomohiro, Yamanishi, Tomoaki, Yamagami, Takuji
• Format: Article
• Language: English
• Subjects: Accumulation; Aorta; Arteries; Carotid arteries; Carotid artery; Computed tomography; Evaluation; Femoral artery; Femur; Imaging; Liver; Medical screening; Medicine; Medicine & Public Health; Nuclear Medicine; Original Article; Positron emission tomography; Radiology; Scanners; Segments; Veins & arteries
• ISSN: 0914-7187; 1864-6433
• DOI: 10.1007/s12149-023-01875-4

Objective To evaluate the differences in FDG accumulation in arteries throughout the body between digital and standard PET/CT. Methods Forty-six people who had FDG-PET examinations with a digital PET/CT scanner for health screening between April 2020 and March 2021 and had previous examinations with a standard PET/CT scanner were the study participants. FDG accumulation in arteries throughout the body was visually assessed in each segment. Scan was considered positive when arterial FDG accumulation was equal to or greater than that of the liver. The positivity rates for general arteries and each arterial segment were compared between the two kinds of scanners. If any one of the arterial segments was considered positive, the general arteries were classified as positive. Moreover, the rate of change in results from the standard PET/CT to the digital scanner in the same individual (negative to positive, positive to negative) was examined. Results In the evaluation of general arteries, the positivity rates were 21.7% (10 cases) for the standard PET/CT, whereas positive rates were 97.8% (45 cases) for the digital PET/CT ( p