MRI Brain

What is an MRI Brain?

An MRI Brain (Magnetic Resonance Imaging of the brain) is a painless, radiation-free test that uses powerful magnets and radio waves to create detailed pictures of brain structures, nerves, and blood vessels.

How MRI Brain Differs from Head MRI

• MRI Brain focuses only on the brain tissue and surrounding cerebrospinal fluid.
• Head MRI includes the skull, facial bones, sinuses, and soft tissues of the head. Doctors order an MRI Brain when symptoms point to neurological issues inside the skull.

• Brain anatomy: ventricles, sulci, midline shift
• Signal intensities: normal vs abnormal brightness
• Lesion characteristics: size, border, enhancement pattern

Diagnostic Confirm or rule out stroke, tumor, infection. Monitoring Track multiple-sclerosis flare-ups or post-chemo changes. Pre-surgical Planning Map tumor proximity to motor or speech areas.

• High-resolution imaging: up to 1 mm slices
• Non-invasive: no needles unless contrast is needed
• No radiation: safe for children and repeat follow-ups

Stroke – DWI sequence spots clots early. Brain Tumors – contrast shows exact size and spread. Multiple Sclerosis – FLAIR reveals white-matter plaques. Infections – meningo-encephalitis, abscess. Traumatic Injury – micro-bleeds, shear injuries.

Pre-requisites

• Bring doctor’s prescription and old films/CDs.
• Fill metal-screening form.
• Remove jewellery, hearing aids, piercings.

Best Time to Take the MRI Brain

Morning slots reduce wait times and fasting is unnecessary unless sedation is planned.

Eligibility

• Adults & children >3 years (younger kids receive mild sedation).
• Pregnancy: 1st trimester deferred unless urgent; 2nd & 3rd trimester safe without contrast.

Step-by-Step Guide

1. Change into cotton gown.
2. Lie on motorized table; head in dedicated brain coil.
3. Ear-plugs & emergency buzzer provided.
4. Scan lasts 15–25 min; hold still.
5. Contrast injected via IV if ordered.
6. Table slides out; you dress and leave.

What to Expect Inside the Scanner

• Loud knocking sounds (headphones offered).
• Lights stay on; airflow ventilated.
• Technologist talks to you between sequences.

Metal Implants Checklist

Contra-indicated: cardiac pacemaker, cochlear implant, neuro-stimulator. Conditional: joint screws, dental implants—bring implant card.

Pregnancy Considerations

Notify staff; we skip gadolinium contrast and use lower SAR protocols.

Safety Concerns

• Magnetic field: Remove all metal objects.
• Claustrophobia: Inform staff; we offer music, mirror glasses, or mild sedation.
• Contrast allergy: Rare (<0.1%); on-site doctor available.

Limitations in Detection

• Very small lesions (<2 mm) may be missed without contrast.
• Calcifications are better seen on CT.
• Patient movement can blur images—our technologists coach you to stay still.