FIGURE 2.  Representative 3D-SSP images of DLB (patient 8), 2 patients who demonstrated mild occipital hypoperfusion (patients 6 and 10), and group analysis between probable DLB group and healthy control subjects. 3D-SSP images of patient 6 show moderate reduction in frontal, parietal, and temporal lobes and mild-to-moderate reduction in precuneus and posterior cingulate gyrus, but mild reduction of occipital lobe, and primary sensorimotor cortex is spared so that this reduction pattern is considered as likely AD. 3D-SSP images of patient 8 show typical findings of DLB with occipital hypoperfusion. 3D-SSP images of patient 10 show heterogeneous reduction of entire brain cortex so that this reduction pattern is considered as not likely to be DLB pattern. 3D-SSP images of group comparison between the probable DLB group and healthy control subjects clearly demonstrated a reduction in parietotemporal, occipital cortex, posterior cingulated, and precuneus perfusion. RT.LAT = right lateral; LT.LAT = left lateral; SUP = superior; INF = inferior; ANT = anterior; POST = posterior; RT.MED = right medial; LT.MED = left medial.