Repeatability of [ 15 O]H 2 O PET imaging for lower extremity skeletal muscle perfusion: a test-retest study.

Parametric images and volume-of-interest-based methods demonstrated comparable resting perfusion values in the lower legs and feet of healthy individuals. The largest variation was seen between individuals, whereas a smaller variation was seen between muscle groups. Repeated measurements of resting blood flow yielded a strong overall correlation for all methods.