Fig. 1.

A representative case of ¹⁸F-FDG (A) and ¹¹C-PiB (B) images. ¹⁸F-FDG and ¹¹C-PiB images were normalized using the cerebellum as a reference region (i.e., cerebellar uptake was set as one), and are displayed in axial sections. Especially in the posterior cingulate and precuneus cortices, ¹⁸F-FDG uptake decreased (A) and ¹¹C-PiB uptake increased (B), showing a pattern characteristic of Alzheimer's disease. This case was from the patient 6 in Table 1.