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British Journal of Radiology 74 (2001),134-141 © 2001 The British Institute of Radiology

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Rotational digital subtraction angiography of the renal arteries: technique and evaluation in the study of native and transplant renal arteries

H R Seymour, MRCP, FRCR 1 M B Matson, MRCP, FRCR 1 A-M Belli, FRCR 1 R Morgan, FRCR 1 J Kyriou, BSc, MSc 2 and U Patel, FRCR 1

1 Department of Radiology 2 The Radiological Protection Centre, St George's Hospital, London, SW17 0QT UK

Rotational digital subtraction angiography (RDSA) allows multidirectional angiographic acquisitions with a single injection of contrast medium. The role of RDSA was evaluated in 60 patients referred over a 7-month period for diagnostic renal angiography and 12 patients referred for renal transplant studies. All angiograms were assessed for their diagnostic value, the presence of anomalies and the quantity of contrast medium used. The effective dose for native renal RDSA was determined. 41 (68.3%) native renal RDSA images and 8 (66.7%) transplant renal RDSA images were of diagnostic quality. Multiple renal arteries were identified in 9/41 (22%) native renal RDSA diagnostic images. The mean volume of contrast medium in the RDSA runs was 51.2 ml and 50 ml for native and transplant renal studies, respectively. The mean effective dose for 120° native renal RDSA was 2.36 mSv, equivalent to 1 year's mean background radiation. Those RDSA images that were non-diagnostic allowed accurate prediction of the optimal angle for further static angiographic series, which is of great value in transplant renal vessels.




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