MRI Temporal Bones

Definition & Purpose

• MRI Temporal Bones is a high-resolution magnetic resonance study focused on the temporal bone, inner ear, and surrounding nerves.
• It shows nerves, blood vessels, and soft tissue far better than traditional imaging.

How It Differs from CT & X-ray

• Cochlear nerve integrity and diameter
• Vestibular apparatus and semicircular canals
• Facial nerve canal, labyrinthine segment & tympanic segment
• Middle ear cavity, ossicles (malleus, incus, stapes)
• Mastoid air cells for fluid or inflammation

• Unexplained sensorineural hearing loss
• Recurrent vertigo or imbalance unresponsive to medication
• Suspected acoustic neuroma or schwannoma pressing on nerves

• Zero radiation – safe for children and repeated follow-ups
• Superior soft-tissue contrast – finds 1–2 mm lesions earlier
• Early detection leads to better outcomes and hearing preservation

• Fasting: Not required for non-contrast; 4-hour fast if contrast is planned.
• Medications: Take all routine drugs with small sips of water.
• Metal screening: Remove jewellery, hearing aids, hairpins; inform staff about pacemakers, cochlear implants, or tattoos.
• Clothing: Wear metal-free cotton garments or change into our provided gown.

• Doctor’s prescription or referral note
• Previous imaging reports (CT, prior MRI) for comparison
• Recent renal function test (creatinine) if gadolinium contrast is needed

• Early morning slots reduce wait times and help claustrophobic patients feel calmer.
• Avoid acute ear infections; reschedule if you have active pain or discharge.

• Adults & children ≥5 years
• Pregnancy: 2nd or 3rd trimester only if essential; no contrast given

1. Registration & safety screening (~10 min)
2. Positioning: Lie on your back; head secured in a soft coil (~5 min)
3. Scan: 25–35 min of intermittent loud knocking; earplugs provided
4. Contrast injection (if ordered) via IV line during the scan
5. Post-scan observation (~15 min) for any delayed reaction

• List all implants: joint replacements, stents, IUDs
• Report tattoos with metallic ink; may warm up
• Ask about sedation if you have severe claustrophobia