Reviewed by the Help Dementia Editorial Team — our editors review every article for accuracy against guidance from the National Institute on Aging, the Alzheimer’s Association, and peer-reviewed sources.
A brain MRI report is dense, intimidating, and rarely explained well during a 15-minute neurology appointment. This guide decodes 12 terms families routinely misread, so you walk out of the next appointment knowing exactly what the scan said.
Understanding brain mri report helps families ask better questions and make calmer decisions. The detail below covers what doctors usually skip when explaining brain mri report.
Encephalomalacia
Softening of brain tissue, usually from a past stroke or trauma. It does not mean active disease, but it does mean some function has been lost in that region.
Microangiopathy or Small Vessel Disease
Damage to the smallest blood vessels in the brain. Strongly linked to vascular dementia and slow cognitive decline. Often shows up as white matter hyperintensities.
Parenchymal Volume Loss
Loss of brain tissue. Some is normal with age. Significant volume loss, especially in the hippocampus, is a key Alzheimer’s marker.
White Matter Hyperintensities
Bright spots on T2 and FLAIR sequences. Mild patches are common after 60. Extensive patches predict stroke and dementia risk.
Hippocampal Atrophy
Shrinkage of the brain’s main memory structure. Often quantified on a 0 to 4 scale. A score of 2 or higher at age 70 is concerning for Alzheimer’s.
Leukoaraiosis
Older term for the same white matter changes as microangiopathy. Still seen in radiology reports.
Cortical Atrophy
Shrinkage of the outer brain surface. Pattern matters: temporal atrophy points to Alzheimer’s, frontal points to FTD.
Ventricular Enlargement
The fluid-filled spaces grow as surrounding tissue shrinks. A passive sign of atrophy, not a primary disease.
Mild Generalized Atrophy
Diffuse, age-related shrinkage. Common in 70-plus adults without dementia.
Lacunar Infarcts
Small old strokes from blocked tiny vessels. Each one is minor; many of them add up to vascular dementia.
Frequently Asked Questions
Should I get a copy of my MRI report?
Yes. Always request the radiology report and the imaging CD. Bring both to follow-up appointments.
Do MRI findings always cause symptoms?
No. Many older adults have microangiopathy or mild atrophy with no measurable cognitive change.
For more, see National Institute on Aging.
Related Guides in This Cluster
- Encephalomalacia On Mri Meaning Memory
- Microangiopathy Small Vessel Disease Dementia
- Parenchymal Volume Loss Normal Aging Or Alzheimers
- White Matter Hyperintensities Dementia Risk
- Hippocampal Atrophy Mri Meaning
- Leukoaraiosis Plain English
- Cortical Atrophy Vs Subcortical Dementia
- Mild Generalized Atrophy Mri Worry
- Ventricular Enlargement Memory Loss
