CT (Computed Tomography)
During the Scan
Computed Tomography Coronary Angiogram
This test helps determine if plaque buildup has narrowed a patient’s coronary arteries, the blood vessels that supply the heart.
Plaque is made of various substances circulating in the blood, such as fat, cholesterol and calcium that deposit along the inner lining of the arteries. Plaque, which builds up over time, can reduce or in some cases completely block blood flow.
You will either be assessed by your treating doctor or our Radiologist (this may occur on a different day prior to your appointment). On the night before and the morning of the exam, you may be asked to take a beta blocker medication to lower your heart rate to optimize the quality of the exam.
On the day before and day of your exam, you may be asked to avoid:
- Diet pills and caffeinated drinks such as coffee, tea, energy drinks or sodas. These may increase heart rate and limit the ability of the exam to evaluate for plaque in the coronary arteries.
- Viagra or any similar medication. They are not compatible with the medications you will receive during the procedure.
- Strenuous exercise in the 24 hours prior to your scan.
To achieve the highest quality and accurate scan, we require the heart rate to be slower than 60 beats per minute. If your heart rate is still too fast upon arrival, more Beta-blocker medication may be required to slow down the heart rate. It generally requires at least one hour to take effect. Your heart rate will be monitored periodically.
During the Scan
As there are typically over 500 images in each scan, there is a lengthy after-scan processing required. We endeavor to keep our turnaround time (from the time of the scan to the report being delivered) within 48 hours of your scan. Please inform our clerical staff to arrange appropriate measures if urgent report is necessary.