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Peripheral Vascular Disease: Comparison of Continuous MR Angiography and Conventional MR Angiography—Pilot Study¹

¹ From the Departments of Diagnostic and Interventional Radiology and Neuroradiology (F.M.V., M.O.Z., M.E.L., K.B., J.B., H.H.Q.) and Angiology (W.L.), University Hospital Essen, Hufelandstrasse 55, D-45122 Essen, Germany; and Department of Diagnostic and Interventional Radiology, University Hospital Hamburg-Eppendorf, Hamburg, Germany (C.U.H.). Received December 22, 2005; revision requested February 21, 2006; revision received March 16; accepted May 2; final version accepted August 4. Address correspondence to F.M.V. (e-mail: florian.vogt{at}uni-essen.de).

The aim of this study was to prospectively assess the accuracy of three-dimensional magnetic resonance (MR) angiography for evaluation of stenosis in the peripheral arterial system with a continuous moving table technique, with conventional MR angiography as reference. This study was approved by the local institutional review board; informed consent was obtained. Five healthy male volunteers (mean age, 27 years; range, 24–35 years) and four men and one woman (mean age, 63 years; range, 46–78 years) with peripheral arterial occlusive disease were examined. Images obtained with both techniques showed excellent concordance (Cohen = 0.75). Images obtained with a conventional protocol had higher quality compared with those obtained with the continuous technique (mean, 1.07 ± 0.25 [standard deviation] vs 1.58 ± 0.6; P < .05); small vessels appeared sharper on them. For detection of significant stenosis and occlusion, accuracy, sensitivity, and specificity of the continuous technique were 92.8%, 100%, and 89.2%, respectively.

© RSNA, 2007

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