Fig. 17 Contrast-enhanced magnetic resonance angiography of renal transplant stenoses. A) Maximum intensity projection (MIP) image of right iliac fossa shows a transplanted kidney with a moderately severe stenosis in the mid-renal artery (arrow). B) Volume-rendered display of another patient shows a high-grade stenosis of the origin of the transplanted renal artery (arrow) as it arises from the right external iliac artery. Portions of the right common and internal iliac arteries are also seen.