MAPT and Alzheimer disease: Apart from the above between-group comparisons, all the remaining analyses were conducted in a pooled group of Aβ-positive individuals, that is, Aβ-positive CU and Aβ-positive MCI patients as we were interested in examining the link between dMRI metrics and amyloid, tau, and cognition in in the AD continuum irrespective of the cognitive status of the participants.