Fig. 1.

Quantification of ¹⁸F-FDG uptake as the target to background ratio (TBR) in the whole (a, d) carotid arteries, as well as the maximum TBR (b, e) and TBR in the most diseased segment (MDS) (c, f) revealed increased uptake in all segments in PAD subjects compared with healthy controls, and a further increase in PAD subjects with concomitant Diabetes Mellitus (a-c). Within Diabetic subjects, insulin dependent subjects (IDDM) had more severe arterial wall inflammation compared with non-insulin dependent subjects (NIDDM) (d-f). P values are adjusted for age and gender. *p < 0.05, **p < 0.01, ***p < 0.001