Before revision:  We applied GGMs for studying the inter-regional associations and dependencies between multimodal imaging markers in prodromal Alzheimer's disease . Data from N=667 subjects with mild cognitive impairment, dementia, and cognitively healthy controls were obtained from the ADNI . Mean amyloid load  , glucose metabolism  , and gray matter volume  was calculated for each brain region.
After revision:  We applied GGMs for studying the inter-regional associations and dependencies between multimodal imaging markers in prodromal Alzheimer's disease . Data from N=667 subjects with mild cognitive impairment, dementia, and cognitively healthy controls were obtained from the ADNI . Mean amyloid load , glucose metabolism (FDG-PET) , and gray matter volume was calculated for each brain region.