CT coronary angiography is an incredible new procedure that provides detailed visualization of the heart's arteries. CT coronary angiography can be performed more quickly, comfortably and affordably than standard coronary angiography. The images are very similar to those provided by invasive heart catheterization, without catheters and without the need to insert equipment into the body. Only an IV line and a small amount of dye are required, so there is minimal risk. This new procedure takes advantage of the huge advances made in CT scanning and software processing technology, and allows for the creation of 3-dimensional images of the heart.

How is this test different from a Heart Scan (Coronary Calcium Score)?

A Heart Scan allows a technologist to precisely measure calcium deposits, which are markers of plaque formation in the coronary arteries, however, it does not measure the degree of narrowing in the arteries.

The CT angiogram gives a precise picture of how the blood is flowing through the arteries and whether there are any restrictions in blood flow. It also allows visualizations of " soft plaques" which may or may not have calcium deposits.

What will I experience during the procedure?

No hospitalization is required and the entire procedure usually lasts only 30 minutes. The actual scan itself only takes about 20-25 seconds, and the patient remains fully clothed. First, a regular IV is placed in the arm and contrast dye is injected. Next, you are asked to hold your breath for 20-30 seconds and pictures are taken of the heart. There is no long catheter threaded into the internal structures as with the traditional hospital catheterization procedure, thus reducing the risk of side effects. The IV is taken out after the procedure is completed and the patient is free to go home.

Is there any other special preparation that may be required?

Depending on your individual case, you may be required to take a medication to slow your heart the morning of the study. You should not experience any side effects from this. You may be asked to fast for a few hours before the study and refrain from drinking caffeinated beverages. Lab reports will be required prior to the study, if they haven't been done lately, to assess your kidney function.

Benefits of CT angiography are best for:
• Follow-up of patients with high calcium scores (usually >100).
• Patients with unusual chest pain syndromes.
• Patients with questionable stress test results.
• Pre-op evaluation of the arteries before a surgical procedure.
• A monitor of patients who have had stent placements or open heart surgeries in the past to
determine if the stents or bypass grafts are still open and functioning adequately.
• Annual follow-up of heart transplant patients.
• Evaluation of congenital heart anomalies.
• Patients with unusual chest pain syndromes and/or SOB

Am I a candidate for this test?

You should discuss whether this is an appropriate test for you with your physician. Since it is so new, your doctor may not be familiar with this test. We would be happy to discuss CT angiography with your doctor. A report of the findings will be mailed to your physician if you desire.

How much radiation is involved?

Depending on patient size, the amount of radiation is about equal to a diagnostic coronary catherization, and with modern CT equipment the radiation dose can be less.