Regional T807 binding according to diagnostic group. T807 standardized uptake value radio (SUVR) in regions-of-interest (ROI) by diagnostic group (CN, circles; MCI, triangles; AD, squares) and amyloid status (high Aβ, red, = PiB DVR 1.2 or greater), showing range, mean, interquartile range. t-test: *p<0.01, **p<0.001