MAPT and Alzheimer disease: A study combining 18F-flortaucipir PET and sMRI revealed that the whole-brain 18F-flortaucipir standardized uptake ratio (SUVr) was significantly correlated with the levels of cerebrospinal fluid t-tau and p-tau; the strongest correlations were found in temporal regions (as confirmed with voxel analyses), suggesting that PET is a useful tool for visualizing pathological changes in AD.