title: Digital subtraction angiography (DSA) of the extracranial cerebral vessels: a direct comparison between intravenous and intra-arterial DSA.
abstract: Fifty patients being investigated for ischaemic cerebrovascular disease underwent both intravenous digital subtraction angiography (IV-DSA) and intra-arterial arch digital subtraction angiography (arch-DSA) to enable a direct comparison to be made between the two techniques. The overall quality of the images obtained by arch-DSA was better than that obtained by IV-DSA, but there was no significant difference between the number and gradation of stenoses detected by the two techniques. No significant stenosis was missed by IV-DSA and the technique was found to be sufficiently accurate for it to be used as a screening procedure for carotid bifurcation stenoses suitable for carotid endarterectomy. The advantages and limitations of both techniques are discussed.
authors.affiliation: Department of Neuroradiology, London Hospital.
authors.forename: R L
authors.initials: RL
authors.lastname: Borgstein
authors.forename: M M
authors.initials: MM
authors.lastname: Brown
authors.forename: J
authors.initials: J
authors.lastname: Waterston
authors.forename: P
authors.initials: P
authors.lastname: Butler
authors.forename: C H
authors.initials: CH
authors.lastname: Thakkar
authors.forename: I G
authors.initials: IG
authors.lastname: Wylie
authors.forename: M
authors.initials: M
authors.lastname: Swash
mesh_terms: D000328:Adult; D000368:Aged; D015901:Angiography, Digital Subtraction / Q000379:methods / Q000592:standards*; D001024:Aortic Valve Stenosis / Q000000981:diagnostic imaging / Q000473:pathology; D002545:Brain Ischemia / Q000000981:diagnostic imaging* / Q000473:pathology; D016893:Carotid Stenosis / Q000000981:diagnostic imaging / Q000473:pathology; D002536:Cerebral Arteries / Q000473:pathology; D006801:Humans; D008875:Middle Aged; D012307:Risk Factors