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Unilateral Renal Artery Stenosis: Perfusion Patterns with Electron-Beam Dynamic CT—Preliminary Experience¹

¹ From the Department of Radiology, Hôpital Marie-Lannelongue, 133 Avenue de la Résistance, 92350 Le Plessis-Robinson, France (J.F.P.); Department of Vascular Radiology, Hôpital Européen Georges Pompidou, Paris, France (J.F.P., M.S., E.M., J.C.G.); and Department of Radiology, Montreal Heart Institute, Montreal, Quebec, Canada (P.U.). From the 2000 RSNA scientific assembly. Received September 20, 2000; revision requested November 12; revision received February 23, 2001; accepted March 23. Address correspondence to J.F.P. (e-mail: pauljf@ccml.com).

Renal dynamic computed tomographic (CT) data for 16 patients with unilateral renal artery stenosis were compared with those for 12 control subjects. Three patterns of perfusion were distinguished in stenotic kidneys: pattern A, symmetric time-attenuation curves; pattern B, asymmetric time-attenuation curve with similar perfusion; and pattern C, asymmetric time-attenuation curve with impaired perfusion. Additional functional data can be obtained from the initial timing scan in a CT study of unilateral renal artery stenosis.

Index terms: Computed tomography (CT), angiography, 961.12915, 961.12916 • Kidney, perfusion, 81.12119 • Renal angiography, 961.12915, 961.12916 • Renal arteries, stenosis or obstruction, 961.721

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