Figure 2. Whole brain FDG SUVR was compared among the 6 groups.

Whole brain FDG SUVR was different among the 6 groups when T2DM status was used as the independent variable (p = 0.001). However, the effects of T2DM on the whole brain FDG SUVR were only seen in participants with MCI. The MCI + T2DM group had a lower whole brain FDG SUVR than the MCI group (p = 0.04). AD = Alzheimer disease; FDG = [¹⁸F]-fluorodeoxyglucose; HC = healthy controls; MCI = mild cognitive impairment; SUVR = standardized uptake value ratio; T2DM = type 2 diabetes mellitus.