Relationship between baseline uncinate fasciculus atrophy and ¹⁸FDG-PET percent change maps. Results of the ROI-to-voxel regression analysis between baseline white matter volume in the uncinate fasciculus (highlighted in Fig. 4) and ¹⁸FDG-PET percent change maps (thresholded at P < 0.005 uncorrected with k > 50 mm³). Left side of the brain is on the left.