Figure 1.

Arterial PET/CT Images and Analysis Methods

(A) Representative CT and ¹⁸F-FDG PET/CT images of the carotid arteries (white arrow, yellow ROIs) and jugular veins (green ROIs) in a patient with cardiovascular disease. Red scale bars indicate 2 cm. Schematics showing (B) standardized uptake values (SUVs) in the whole artery and the background, (C) background corrections, and (D) active segment analysis with corresponding imaging parameters. A similar analysis is performed for the aortic segment. CT = computed tomography; ¹⁸F-FDG = ¹⁸fluorodeoxyglucose; MDS = most diseased segment; PET = positron emission tomography; ROI = regions of interest; SUV_max = maximum standardized uptake value; SUV_mean = mean standardized uptake value; TBR = target to background ratio.