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February 1973

Cerebral Angiography and Subtraction in Neuro-otologic Diagnosis

Author Affiliations

St. Louis
From the Department of Radiology, Washington University School of Medicine, and the Edward Mallinckrodt Institute of Radiology, St. Louis. Dr. Taveras and Dr. Roberson are now with Massachusetts General Hospital.

Arch Otolaryngol. 1973;97(2):166-169. doi:10.1001/archotol.1973.00780010172016

Subtraction, photographic method which cancels out bone shadows that obscure vascular details, is valuable adjunct to standard angiographic techniques.

Vertebral angiography via catheter approach is useful in evaluating atypical cerebellopontile angle masses, vascular lesions, and meningiomas. Displacement of anterior inferior cerebellar artery, usually posteriorly and upward, is earliest angiographic feature of cerebellopontile angle masses. Elevation, lateral displacement, or nonfilling of petrosal vein may be observed. Carotid angiography, preferably with selective external carotid injections, is indicated to diagnose and localize glomus tumors.

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