Teaching Points
- Tinnitus, a buzzing or ringing in the ear, may be pulsatile or continuous (non-pulsatile)
- The distinction determines the most appropriate imaging study
- Gadolinium enhanced MRI is the study of choice for evaluation of non-pulsatile tinnitus
- Contrast enhanced CT (+/- CTA) is the initial imaging modality of choice for the investigation of pulsatile tinnitus
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