CT Coronary Angiogram
A computerized tomography (CT) coronary angiogram is an imaging test that looks at the arteries that supply blood to your heart. It uses a powerful X-ray machine to produce images of your heart and its blood vessels, and it might be done to diagnose the cause of chest pain or other symptoms. The procedure is noninvasive and doesn’t require recovery time.
Who Can Benefit from a CT Coronary Angiogram?
A CT coronary angiogram is often recommended for people with chest pain of unclear cause, or for those with risk factors such as high blood pressure, high cholesterol, diabetes, or a family history of heart disease. It can show whether the coronary arteries are narrowed or blocked by plaque, helping your doctor decide on the best treatment.
A normal result can also provide reassurance and may help you avoid more invasive testing. Your doctor will review the images with you and explain what the findings mean for your care.
CT Coronary Angiogram: Risks, Preparation and What to Expect
Knowing each step in advance can help you feel prepared and at ease on the day of your test.
Risks
The scan uses some radiation, and the cancer risk is unknown but small. A dye allergy is possible, and the test should not be done during pregnancy.
Food and Drink
Avoid eating for about four hours before the test, though water is fine. Skip caffeinated drinks for 12 hours, as they raise heart rate and blur images.
Medications
Tell your doctor about all medications, as some may need to be paused. If you're allergic to contrast dye, you may take steroids 12 hours before the scan.
Before the Procedure
You may receive a beta blocker to slow your heart rate for clearer images. Nitroglycerin may also be given to widen your arteries before the scan.
During the Procedure
An IV delivers the dye, and chest patches record your heart rate. You'll lie on a table that slides through the scanner, staying still and holding your breath.
After the Procedure
You can return to normal activities right away and drive yourself home or to work. Drink plenty of water to help flush the dye from your system.