Time-activity curves of 11C-ITMM (A) and 11C-ITDM (B) in brain regions. Regions of interest were drawn on the cerebellum (open circles), thalamus (open squares), caudate (open triangles), putamen (open diamonds), cingulate cortex (solid circles), hippocampus (solid squares), and pons (solid triangles). The uptakes were expressed as SUV.