Coronary Angiography is a procedure which uses X-rays and a special dye that enables the doctor to see any abnormalities in chambers of the heart, blood vessels and the pattern of flow of blood to the heart. It is used to:
A special fluid (called a contrast medium or dye) is then injected into the catheter and X-ray images are taken. The pictures produced are called angiograms. The fluid that is injected is visible on the X-rays, so the angiograms show up all the blood vessels that the fluid travels through.
It is a safe procedure with little to no pain and a low risk of complications.