The coronary angiogram is a diagnostic scan that is used to obtain information about the coronary arteries supplying blood to the heart muscle. It is specifically designed to determine if any of the arteries are narrowed or becoming blocked.

We require a letter of referral from your doctor in order to perform a coronary angiogram for you. Your doctor may consider this procedure for you if:

• You have had an EBCT or other tests that show significant coronary artery disease
• Your previous coronary artery angioplasty, stent or bypass graft needs to be checked for a blockage
• You need, or would like, a less invasive alternative to a conventional angiogram

In both the CTA and conventional angiogram contrast dye is injected into the blood circulation and images taken of the coronary arteries as the dye passes through them. This makes it possible to see whether the dye flows freely, or whether there are any blockages.

The immense advantage of the CTA is that its great speed means that contrast dye can be injected into a surface arm vein and a complete image of the heart obtained within the seconds it takes for the dye to reach the coronary arteries. With the slower, conventional angiogram, it is necessary to introduce the contrast dye over several injections via a thin tube (catheter) placed directly in the heart arteries. Placing the catheter is invasive – it has to be put in position by passing it through a small incision in the groin into the main leg artery and up to the heart via the aorta. Once the procedure is finished and the catheter withdrawn, you will need to lie still for several hours with a heavy weight over the incision to minimize the risk of leakage.

• Faster and safer procedure
• 3D colour images
• No sedation or local anesthetic necessary
• No catheter
• No risk of bleeding, bruising or damage to the arteries
• You can drive and resume normal activities immediately

You will need to fast (no food, but drink enough water) for six hours before you come to the centre for an CTA.

Scanning takes about 45 minutes from start to finish and you will be free to leave immediately afterwards and resume your normal activities. Further details of the scanning procedure can be found in the Your Visit section.