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Fig. 1C. —77-year-old man treated with 1.5-cm Palmaz stent (Cordis, Johnson & Johnson, Miami, FL) for ostial atherosclerotic renal artery stenosis 6 months after intervention. Paracoronal volume-rendered CT scans with high-to-low opacity transfer function (C) and volume-rendered virtual endoscopy (D) show patent stent. Image quality and lumen delineation here exceed those in A. Digital subtraction angiogram (not shown) obtained 6 months after A-D showed no restenosis. Intraarterial blood pressure measurements revealed gradient of 5 mm Hg between aorta and renal artery, thus ruling out restenosis.

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