Vertigo MRI
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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MRI
- MRI is superior to a CT scan due to its ability to visualize the posterior fossa.
===MRI/MRA:=== .
- If history/physical examination suggests central cause of vertigo
- If unable to distinguish central vs. peripheral etiology in patient with risk factors for cerebrovascular accident (CVA)
- Sensitivity/specificity of MRA > 95% for posterior circulation lesion
MRI of Internal Auditory Canal/Cerebellopontine Angle
- If acoustic neuroma suspected
- Incidence of acoustic neuroma in patients with vertigo and no hearing loss: 1/9000
- Incidence of acoustic neuroma in patients with dizziness and asymmetric hearing loss: 1/600