Digital subtraction angiography: Applications in otolaryngology—head and neck surgery

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Abstract
Digital electronic technology has made its most notable contribution to radiology in the form of the CT scanners which have so greatly benefited medical practice. Experience with intravenous angiography using a digital fluoroscopy unit developed at the University of Arizona gives promise of a further major benefit in the area of angiography. The majority of examinations are conducted on an outpatient basis with a risk level comparable to that of an intravenous pyelogram. The authors review their experience with this unit, including it's diagnostic and therapeutic applications to congenital and acquired vascular diseases, neoplasms, and vascular trauma of the head and neck.