human 126 Alzheimer disease 117 Humans 96 Article 92 male 77 Alzheimer's disease 75 female 74 controlled study 72 Alzheimer Disease 65 Alzheimer’s disease 65 aged 62 Aged 45 adult 44 Female 41 cognitive defect 41 nuclear magnetic resonance imaging 40 Male 38 major clinical study 37 cognition 35 diagnostic imaging 33 dementia 30 middle aged 29 very elderly 28 mild cognitive impairment 27 Aged, 80 and over 26 Magnetic Resonance Imaging 26 metabolism 26 Cognitive Dysfunction 25 neuroimaging 24 neuropsychological test 24