Digital subtraction angiography.
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.
Reid
A W
AW
Department of Radiology, Royal Infirmary, Glasgow.
D000792:Angiography / Q000379:methods*; D006801:Humans; D011856:Radiographic Image Enhancement / Q000379:methods*; D013382:Subtraction Technique