Gray matter atrophy mediates the association between cerebral hypometabolism and cognitive impairment in Alzheimer’s disease
Objective Alzheimer’s disease (AD) is characterized by amyloid deposition, brain hypometabolism, gray matter atrophy and cognitive decline, yet their causal interactions are poorly defined. This multimodal PET/MRI study explored regional gray matter volume (GMV) loss and glucose hypometabolism in AD patients, and clari...