Renal Angiography/Stents

Your doctor may want you to have a renal angiography because of hypertension that is not responding to medicines. Renal angiography is an x-ray study used to study arteries that feed the kidneys. The test involves placing a small plastic tube into the arterial system. This small plastic tube, or catheter, is usually introduced into an artery at the top of the leg. The catheter is then advanced up into the arteries near the kidneys. There, x-ray contrast is injected into the arteries, and x-ray images of the arteries are taken. Renal stents can then be placed to hold open any blockages that were found.