Colocalization of focal 68
Ga-DOTATATE and 18
F-FDG uptake. Comparison of 37 foci of increased 68Ga-DOTATATE uptake (left) and 39 foci of increased 18F-FDG uptake (right) with respect to colocalized focal uptake of the other radiotracer and calcification. Imaging findings were characterized as concordant when there was agreement in positive detection with both tracers, and as discordant in cases of discrepancy between the two tracers' uptake.