A MRI is commonly performed, although this modality (as is noted below) may not have optimal sensitivity for the diffuse metabolic changes associated with dementia in a patient who shows no gross neurological problems (such as paralysis or weakness) on neurological exam. MRI may suggest normal pressure hydrocephalus, a potentially reversible cause of dementia, and can yield information relevant to other types of dementia, such as infarction (stroke) that would point at a vascular type of dementia.
Asymmetric cortical atrophy is often observed in neurodegenerative dementias and sometimes manifests as disproportionate impairments in the functions mediated by the more atrophic regions.
Dementia MRI
Alzheimer's disease MRI
Dementia CT
Alzheimer's disease CT scan
Parkinson's disease CT
Alzheimer's disease ultrasound
Parkinson's disease MRI
Alzheimer's disease physical examination