Click on image to view larger version.

Figure 2 (A) Right renal artery angiogram with subtle irregularities at the edges of the arterial lumen, producing a slightly scalloped appearance. (B) Transverse view at the level of the origin of the right renal artery showing laminar flow in the proximal segment (red), becoming turbulent in the middle segment, beginning with the first curve on the angiogram. (C) Intravascular ultrasound in the middle segment of the right renal artery, demonstrating a membrane (arrow). Ao = aorta.