MRI of the Brain, in plain English.
A brain MRI looks at every part of your brain, the fluid spaces around it, and the small blood vessels inside it. It is usually ordered for headaches, dizziness, seizures, stroke evaluation, or memory issues.
Why doctors order this scan
- New headache pattern, especially with vomiting or vision change
- Suspected stroke or TIA
- Seizures or unexplained fainting
- Memory or behaviour changes
- After a head injury with ongoing symptoms
What this MRI actually shows
- •The brain tissue (grey matter and white matter)
- •The fluid spaces (ventricles) inside the brain
- •The blood vessels — clearly with MR angiography
- •The pituitary gland and skull base
Common findings, decoded
These are the words you are most likely to see. They sound scarier than they usually are.
- T2 / FLAIR hyperintensity
- A bright spot on this MRI setting. Often just a small area of old wear-and-tear.
- Small vessel ischaemic changes
- Tiny changes in the brain's smallest blood vessels. Very common with age, blood pressure or diabetes.
- Lesion
- A neutral word for "an area that looks different". It does not mean cancer.
- Mucosal thickening in sinuses
- The lining of the sinuses is a little swollen — usually from allergy or a cold.
- Prominent ventricles
- The fluid spaces are a bit large — sometimes just the normal shape of your brain.
Words that usually deserve a doctor conversation
If you see any of these on your report, it does not mean an emergency — but do not ignore them either. Book a follow-up.
How to prepare for the scan
- •No fasting for a plain brain MRI (fasting only if contrast is planned)
- •Remove all metal — glasses, hairpins, jewellery, dentures if removable
- •Tell the technician about a pacemaker, cochlear implant, or metal fragments
- •The scanner is noisy. You will be given earplugs. The scan takes 25-45 minutes.
Questions worth asking your doctor
- 1Do any of these findings explain my symptoms?
- 2Are the white-matter changes age-related, or something to act on?
- 3Do I need any follow-up scan, and after how long?
- 4Should I be checking my blood pressure, sugar or cholesterol more carefully?
In an Indian context
In India, brain MRIs are commonly ordered for chronic headache and vertigo. Small white-matter spots in patients over 45 are one of the most frequent "scary-sounding but usually benign" findings.
Frequently asked questions
What does "T2 hyperintensity" on my brain MRI mean?+
T2 hyperintensity is a bright spot on one of the MRI's standard imaging settings. Small, scattered spots are extremely common with age, blood pressure or diabetes and are usually not urgent. The number, location, and pattern matter — your doctor will judge in context.
Is a "lesion" on my brain MRI cancer?+
No. "Lesion" simply means an area that looks different from the surrounding tissue. It is a neutral radiologist's word — it does not indicate cancer. Old scars, small blood vessel changes, cysts, and inflammation are all called lesions.
How much does a brain MRI cost in India?+
A plain brain MRI in India costs roughly ₹3,500 to ₹10,000. A contrast-enhanced brain MRI or MR angiography is usually ₹1,500-₹3,000 more.
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MRIdecoder is an educational tool. It does not diagnose or replace a qualified radiologist or physician. Always confirm findings and treatment with your doctor.