be used to exclude other causes of such symptoms, such as vestibular schwannoma, superior semicircular dehiscence, and other IAC masses. Most imaging facilities are unable to perform the specific type of MRI required for evaluation of endolymphatic hydrops. Outside of academic medical centers with specialized imaging protocols, IAC MRI is usually performed to negatively exclude other causes of vertigo with unilateral hearing loss or tinnitus, rather than to make a positive imaging-based diagnosis of MD. CT Head With IV Contrast There is no relevant literature regarding the use of CT head with IV contrast in the evaluation of suspected MD. CT Head Without and With IV Contrast There is no relevant literature regarding the use of CT head without and with IV contrast in the evaluation of suspected MD. CT Head Without IV Contrast There is no relevant literature regarding the use of CT head without IV contrast in the evaluation of suspected MD. CT Temporal Bone With IV Contrast There is no relevant literature regarding the use of CT temporal bone with IV contrast in the evaluation of suspected MD. CT Temporal Bone Without and With IV Contrast There is no relevant literature regarding the use of CT temporal bone without and with IV contrast in the evaluation of suspected MD. CT Temporal Bone Without IV Contrast Superior semicircular canal dehiscence, which can present with similar symptoms to MD, can be readily diagnosed on a CT temporal bone without IV contrast. Three-dimensional CT temporal bone may be used for the evaluation of stenosis of the vestibular aqueduct [48,49] and high jugular bulb in patients with suspected MD [50]. CTA Head and Neck With IV Contrast There is no relevant literature regarding the use of CTA head and neck with IV contrast in the evaluation of suspected MD. MRA Head and Neck With IV Contrast There is no relevant literature regarding the use of MRA head and neck with IV contrast in the evaluation of suspected MD.
Dizziness and Ataxia. be used to exclude other causes of such symptoms, such as vestibular schwannoma, superior semicircular dehiscence, and other IAC masses. Most imaging facilities are unable to perform the specific type of MRI required for evaluation of endolymphatic hydrops. Outside of academic medical centers with specialized imaging protocols, IAC MRI is usually performed to negatively exclude other causes of vertigo with unilateral hearing loss or tinnitus, rather than to make a positive imaging-based diagnosis of MD. CT Head With IV Contrast There is no relevant literature regarding the use of CT head with IV contrast in the evaluation of suspected MD. CT Head Without and With IV Contrast There is no relevant literature regarding the use of CT head without and with IV contrast in the evaluation of suspected MD. CT Head Without IV Contrast There is no relevant literature regarding the use of CT head without IV contrast in the evaluation of suspected MD. CT Temporal Bone With IV Contrast There is no relevant literature regarding the use of CT temporal bone with IV contrast in the evaluation of suspected MD. CT Temporal Bone Without and With IV Contrast There is no relevant literature regarding the use of CT temporal bone without and with IV contrast in the evaluation of suspected MD. CT Temporal Bone Without IV Contrast Superior semicircular canal dehiscence, which can present with similar symptoms to MD, can be readily diagnosed on a CT temporal bone without IV contrast. Three-dimensional CT temporal bone may be used for the evaluation of stenosis of the vestibular aqueduct [48,49] and high jugular bulb in patients with suspected MD [50]. CTA Head and Neck With IV Contrast There is no relevant literature regarding the use of CTA head and neck with IV contrast in the evaluation of suspected MD. MRA Head and Neck With IV Contrast There is no relevant literature regarding the use of MRA head and neck with IV contrast in the evaluation of suspected MD.