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[kÅlanâ²jÄÂ·Égramâ²]. an x-ray film of the bile ducts produced after injection of a radiopaque contrast medium. A cholangiogram is routinely performed before or after biliary tract surgery. A postoperative radiogram may be made after injecting an iodinated contrast medium through an indwelling T-tube.The medium also may be introduced directly into the biliary system or intravenously. See also cholangiography, cholecystography. cholangiogram is routinely performed before or after biliary tract surgery. A postoperative radiogram may be made after injecting an iodinated contrast medium through an indwelling T-tube. The medium also may be introduced directly into the biliary system or intravenously. See also cholangiography, cholecystography.
Guide. An angiogram is an X-ray test that uses a special dye and camera (fluoroscopy) to take pictures of the blood flow in an artery (such as the aorta) or a vein (such as the vena cava). An angiogram can be used to look at the arteries or veins in the head, arms, legs, chest, back, or belly.hy It Is Done. An angiogram is done to: 1  Detect problems with blood vessels that affect blood flow. 2  Examples of such problems include a tear in a blood vessel (which can cause blockage or internal bleeding), aneurysms (which are weaknesses in the blood vessel wall), and narrowed areas.