A Coronary Angiogram is a special x-ray of the heart’s arteries in order to show if they are narrowed or blocked. The test involves the insertion of a long thin catheter into an artery in the groin or wrist under local anaesthetic. The catheter is moved up the inside of the artery until it reaches the heart. When the catheter is in place, a small amount of dye will be injected into it. X-rays will be taken as the dye travels through the coronary arteries. A standard angiogram takes approximately 30-40 minutes.