Fig. 3

Pairwise group differences of regional QTM velocity and CBF. (A) and (B) are QTM velocity in GM and Hippo, respectively. (C) and (D) are CBF in GM and Hippo. QTM velocity shows group differences between NC, MCI, and AD in both regions. CBF only differs between AD and MCI or NC, but not between MCI and NC. Asterisks indicate significance: * indicates p < 0.05, ** indicates p < 0.01. The red asterisks highlight the significant QTM velocity reduction from NC to MCI, which was not applied to CBF