Evolving Role of Digital Subtraction Angiography in Neurosurgical Practice

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Abstract
Advances in digital subtraction angiography (DSA) have allowed the evaluation of a number of pathological conditions involving the extra-and intracranial vasculature. In addition to its role in diagnosis. DSA has been used for the postoperative assessment of endarterectomy, aneurysm clipping, and vascular bypass and for the follow-up of arteriovenous fistulas or malformations. This paper describes the theory and anticipated improvements in the digital processing of radiological information and presents our initial assessment of its clinical utility.

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