title: Digital subtraction angiography.
abstract: Digital Subtraction is a computerised radiological technique to demonstrate the vascular tree by removing unwanted background information and enhancing dilute contrast medium within the blood vessels. Contrast may be introduced intravenously or intra-arterially. The relative merits of these two methods, together with the advantages and limitations of the technique are discussed.
authors.affiliation: Department of Radiology, Royal Infirmary, Glasgow.
authors.forename: A W
authors.initials: AW
authors.lastname: Reid
mesh_terms: D000792:Angiography / Q000379:methods*; D006801:Humans; D011856:Radiographic Image Enhancement / Q000379:methods*; D013382:Subtraction Technique