Finding the right tests…
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Finding the right tests…
MRI
Gradual hearing loss on one side, ringing in that ear, or an imbalance that won't settle point toward the inner-ear structures inside the temporal bone, and this contrast scan is how doctors look closely at them. NIDCD, part of NIH, describes MRI as critical for the early detection of a vestibular schwannoma - also called an acoustic neuroma - a usually benign growth on the hearing and balance nerve. Gadolinium contrast, injected through a vein, is what StatPearls describes as enhancing how such a tumor shows up against normal tissue and how it relates to nearby structures. NIDCD estimates about one in 100,000 people develops this tumor each year. No radiation is involved.
This scan images the temporal bone and internal ear canal after a gadolinium injection highlights any small growth on the hearing or balance nerve. It's the main way doctors look for a vestibular schwannoma, also called an acoustic neuroma, when one-sided hearing loss, tinnitus, or imbalance points toward that possibility.
Hearing loss, tinnitus, or dizziness affecting mainly one ear is a pattern NIDCD links closely to vestibular schwannoma, a usually benign tumor growing on the nerve that carries hearing and balance signals. Symptoms affecting both ears equally tend to point elsewhere, which is part of why the one-sided pattern specifically prompts this scan.
StatPearls describes contrast-enhanced MRI as the standard way this tumor is diagnosed - gadolinium enhances how the growth appears against surrounding tissue and shows its relationship to nearby nerves and structures inside the temporal bone. Without contrast, a small tumor can be harder to distinguish clearly.
- A vestibular schwannoma (acoustic neuroma) in the internal ear canal - The tumor's size and how close it sits to nearby nerves - Other causes of one-sided hearing loss or balance symptoms
NIDCD estimates about one in 100,000 people develops a vestibular schwannoma each year, most often between the ages of 30 and 60.
MRI uses magnets, radio waves, and the contrast injection rather than X-rays, so no radiation is involved.
Gadolinium contrast enhances how a tumor like a vestibular schwannoma shows up against normal tissue, which is why StatPearls describes contrast-enhanced MRI as the standard way this condition is diagnosed. Without it, a small growth can be harder to see clearly.
It's a usually benign, slow-growing tumor on the nerve that carries hearing and balance signals from the inner ear, also called an acoustic neuroma. NIDCD estimates it develops in about one in 100,000 people each year.
A vestibular schwannoma typically affects one ear at a time, so hearing loss, tinnitus, or dizziness on one side is the pattern NIDCD links most closely to this condition. Symptoms affecting both ears equally usually point elsewhere.
This page is general information about the test, not medical advice. Your own report's reference ranges apply — please discuss your results with your doctor.
No. It uses magnets, radio waves, and a contrast injection rather than X-rays, so no radiation is involved.
Gadolinium contrast is generally considered safe with a low rate of reaction. Mention any kidney problems or previous contrast reactions to your doctor beforehand.
It's specifically aimed at the temporal bone and internal ear canal, so it can pick up other structural causes there too, not only a schwannoma. Your doctor interprets the images alongside your hearing test results.
Preparation mainly involves removing metal jewelry and similar items beforehand. Ask your doctor or the centre about anything specific to you, including implants.