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1 From the Departments of Radiology (K.M.H., L.E.M.D., A.V.T., J.H.M.W., H.C. M.v.d.B.), Vascular Surgery (P.W.M.C.), and Nephrology (P.D.D.), Catharina Hospital, Michelangelolaan 2, 5602 ZA Eindhoven, the Netherlands; and Philips Medical Systems, Best, the Netherlands (G.R.P.T.). Received December 21 2001; revision requested February 27, 2002; final revision received August 22; accepted August 27. Address correspondence to L.E.M.D. (e-mail: l.duijm@worldonline.nl).
Ten patients with failing hemodialysis access underwent contrast materialenhanced magnetic resonance (MR) angiography within 7 days before digital subtraction angiography (DSA). MR angiography was performed at 1.5 T by using a multistation multiinjection three-dimensional technique, and contrast material was injected via intravenous cannula. In all patients, MR angiographic images displayed the complete arterial inflow tract from the subclavian artery and access proper. The complete venous outflow tract up to the superior caval vein could be evaluated in all but one patient. DSA showed hemodynamically significant stenoses in 13 segments. MR angiography depicted all 13 stenoses and two false-positive findings, resulting in sensitivity of 100% and specificity of 94%.
© RSNA, 2003
Index terms: Dialysis shunts, 81.42 Digital subtraction angiography, 81.1243, 81.1244, 81.42 Grafts, stenosis or thrombosis, 81.42 Magnetic resonance (MR), vascular studies, 81.12142, 81.12143, 81.42
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