AD severity Alzheimer disease 1 Alzheimer's disease 1 Article 1 Mini Mental State Examination 1 aged 1 brain size 1 clinical feature 1 disease severity 1 electroencephalogram 1 electroencephalography 1 female 1 human 1 image processing 1 image segmentation 1 learning algorithm 1 magnetic resonance imaging 1 major clinical study 1 male 1 multimodal prediction 1 nuclear magnetic resonance imaging 1 prediction 1 risk factor 1 white matter 1