title: Digital subtraction angiography (DSA): a neurosurgical perspective.
abstract: The purpose of this article is to review the contribution of DSA to neurosurgical practice and to outline its advantages and limitations compared to conventional film-screen angiography. DSA is a technique whereby electronic subtraction allows the near instantaneous demonstration of vascular anatomy essentially free of bony detail. Because DSA possesses a high degree of contrast sensitivity, arterial images can be produced after an intravenous injection of contrast medium as well as by selective arterial catheterisation.
authors.affiliation: London Hospital, Whitechapel, England.
authors.forename: P
authors.initials: P
authors.lastname: Butler
mesh_terms: D000328:Adult; D001932:Brain Neoplasms / Q000000981:diagnostic imaging*; D002533:Cerebral Angiography / Q000379:methods*; D002561:Cerebrovascular Disorders / Q000000981:diagnostic imaging*; D002648:Child; D006801:Humans; D007231:Infant, Newborn; D013118:Spinal Cord Diseases / Q000000981:diagnostic imaging*; D013382:Subtraction Technique