Fig. 4
Representative CAD case: A man in his 60s who had significant stenosis in the LAD (#6 100%; orange arrow) and RCA (#1 70%, #3 90%; red arrows). 15O-water PET/CT demonstrated the decrease of stress MBF and CFR in the LAD and RCA territories. The estimated whole CFR was 2.19. The CFRs in the LAD, LCX, and RCA territory were 1.66, 3.11, and 2.01, respectively. Calcifications were seen on the LAD and RCA (Agatston score = 97)