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British Journal of Radiology (1989) 62, 813-816
© 1989 British Institute of Radiology
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The British Journal of Radiology, Vol 62, Issue 741 813-816, Copyright © 1989 by British Institute of Radiology

ARTICLES

Relative safety of intravenous digital subtraction angiography over other methods of carotid angiography and impact on clinical management of cerebrovascular disease

JM Stevens, S Barter, R Kerslake, A Schneidau, C Barber and DJ Thomas
St Mary's Hospital, Paddington, London.

Data from a multicentre survey based on three London teaching hospitals on the relative safety and clinical utility of intravenous carotid digital subtraction angiography (DSA) over intra-arterial DSA and conventional carotid angiography are presented. The incidence of stroke during intra-arterial DSA was 0.7% (n = 538) and during conventional angiography was 0.8% (n = 780). The incidence of stroke during intravenous DSA was zero (n = 3710). When it constituted the initial investigation, intravenous DSA achieved a 93.8% replacement value over intra-arterial studies as a whole (n = 474) and 89% replacement value for patients having carotid endarterectomy (n = 99). It was also noted that the installation of DSA equipment at one unit coincided with a sixfold increase in the number of carotid angiographic examinations and an almost threefold increase in carotid endarterectomies.




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