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Fibromuscular Dysplasia of the Main Renal Arteries: Comparison of Contrast-enhanced MR Angiography with Digital Subtraction Angiography¹

¹ From the Departments of Cardiovascular Radiology (S.W., M.F., C.L., J.B., M.F., V.G., J.P.B.), Nephrology (O.M.), and Cardiology (C.V.), CHRU de Lille, 59037 Lille Cedex, France. Received January 29, 2005; revision requested March 31; revision received September 28; accepted October 17; final version accepted March 1, 2006. Supported by the EA2693. Address correspondence to S.W. (e-mail: s-willoteauxs{at}chru-lille.fr).

View larger version (97K): [in this window] [in a new window] [Download PPT slide]   Figure 1a: FMD of right medial renal artery. (a) Anteroposterior digital subtraction angiogram with selective injection shows string-of-pearls appearance (arrow) in middle to distal aspect of artery. (b) Coronal source image, (c) coronal maximum intensity projection, and (d) coronal volume-rendered image show string-of-pearls appearance (arrow) at magnified contrast-enhanced MR angiography (5.2/1.5, 40° flip angle, and 0.78 x 0.78 x 1.5-mm reconstructed voxel).

View larger version (119K): [in this window] [in a new window] [Download PPT slide]   Figure 1b: FMD of right medial renal artery. (a) Anteroposterior digital subtraction angiogram with selective injection shows string-of-pearls appearance (arrow) in middle to distal aspect of artery. (b) Coronal source image, (c) coronal maximum intensity projection, and (d) coronal volume-rendered image show string-of-pearls appearance (arrow) at magnified contrast-enhanced MR angiography (5.2/1.5, 40° flip angle, and 0.78 x 0.78 x 1.5-mm reconstructed voxel).

View larger version (139K): [in this window] [in a new window] [Download PPT slide]   Figure 1c: FMD of right medial renal artery. (a) Anteroposterior digital subtraction angiogram with selective injection shows string-of-pearls appearance (arrow) in middle to distal aspect of artery. (b) Coronal source image, (c) coronal maximum intensity projection, and (d) coronal volume-rendered image show string-of-pearls appearance (arrow) at magnified contrast-enhanced MR angiography (5.2/1.5, 40° flip angle, and 0.78 x 0.78 x 1.5-mm reconstructed voxel).

View larger version (71K): [in this window] [in a new window] [Download PPT slide]   Figure 1d: FMD of right medial renal artery. (a) Anteroposterior digital subtraction angiogram with selective injection shows string-of-pearls appearance (arrow) in middle to distal aspect of artery. (b) Coronal source image, (c) coronal maximum intensity projection, and (d) coronal volume-rendered image show string-of-pearls appearance (arrow) at magnified contrast-enhanced MR angiography (5.2/1.5, 40° flip angle, and 0.78 x 0.78 x 1.5-mm reconstructed voxel).

View larger version (158K): [in this window] [in a new window] [Download PPT slide]   Figure 2a: FMD of right medial renal artery. Magnified images of right renal artery show string-of-pearls appearance (arrow) in distal two-thirds of the artery on (a) anteroposterior digital subtraction angiogram and (b) transverse multiplanar reformation obtained at contrast-enhanced MR angiography (5.2/1.5, 40° flip angle, and 0.78 x 0.78 x 1.5-mm reconstructed voxel).

View larger version (62K): [in this window] [in a new window] [Download PPT slide]   Figure 2b: FMD of right medial renal artery. Magnified images of right renal artery show string-of-pearls appearance (arrow) in distal two-thirds of the artery on (a) anteroposterior digital subtraction angiogram and (b) transverse multiplanar reformation obtained at contrast-enhanced MR angiography (5.2/1.5, 40° flip angle, and 0.78 x 0.78 x 1.5-mm reconstructed voxel).

View larger version (120K): [in this window] [in a new window] [Download PPT slide]   Figure 3a: FMD of right medial renal artery. (a) Nonselective anteroposterior aortogram shows long stenosis (arrow) in medial part of the right renal artery. (b) Coronal maximum intensity projection and (c) volume-rendered image, both of which were obtained at contrast-enhanced MR angiography (5.2/1.5, 40° flip angle, and 0.78 x 0.78 x 1.5-mm reconstructed voxel), show lesion with overestimation of stenosis.

View larger version (117K): [in this window] [in a new window] [Download PPT slide]   Figure 3b: FMD of right medial renal artery. (a) Nonselective anteroposterior aortogram shows long stenosis (arrow) in medial part of the right renal artery. (b) Coronal maximum intensity projection and (c) volume-rendered image, both of which were obtained at contrast-enhanced MR angiography (5.2/1.5, 40° flip angle, and 0.78 x 0.78 x 1.5-mm reconstructed voxel), show lesion with overestimation of stenosis.

View larger version (87K): [in this window] [in a new window] [Download PPT slide]   Figure 3c: FMD of right medial renal artery. (a) Nonselective anteroposterior aortogram shows long stenosis (arrow) in medial part of the right renal artery. (b) Coronal maximum intensity projection and (c) volume-rendered image, both of which were obtained at contrast-enhanced MR angiography (5.2/1.5, 40° flip angle, and 0.78 x 0.78 x 1.5-mm reconstructed voxel), show lesion with overestimation of stenosis.