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).