Using Serial Registered Brain Magnetic Resonance Imaging to Measure Disease Progression in Alzheimer Disease

Abstract
ALZHEIMER DISEASE (AD) is characterized by gradual cognitive decline and progressive cerebral atrophy. At autopsy, the histopathological disease hallmarks of amyloid plaques and neurofibrillary tangles are accompanied by widespread synaptic and neuronal loss. Atrophy is a macroscopic consequence of these cellular losses that can be visualized in life using computed tomography or magnetic resonance imaging (MRI).1