BPND across the brain in the Alzheimer's disease (AD) and healthy control (HC) groups. The corrected BPND values in the AD (n = 10) and healthy control (n = 12) groups were plotted as open circles in the whole cerebellum, anterior lobe, posterior lobe, vermis, frontal cortex, parietal cortex, and temporal cortex. No significant difference was observed between the two groups across the brain.