Cardiac Perfusion Scan
How It Is Done continued...
You will begin by walking or pedaling slowly and easily. Every few minutes, the speed or incline of the treadmill or resistance of the bike may be increased. You will exercise until you need to stop or until you reach a suitable heart rate. At that point, you will be given a different tracer medicine through your IV. You will probably continue to exercise for an additional 1 to 2 minutes to circulate the radioactive tracer.
You will then lie down on a table for scanning. Each scan takes 5 to 10 minutes. The camera does not produce any radiation, so you are not exposed to any additional radiation while the scan is being done.
Sometimes more pictures are taken after you rest for 30 minutes to 4 hours. In some hospitals, you are given more radioactive tracer several hours after exercise and before the final image.
Most people can resume their normal diet and activities after the final set of scans.
How It Feels
The cardiac scanning test itself is painless.
- You may feel a brief stinging or burning sensation when the IV is inserted into your vein.
- You may be uncomfortable lying still for an extended period of time on the table during the scans.
- If medicine to stress your heart is used, you may have symptoms of mild nausea, headache, dizziness, flushing, or chest pain. These symptoms only last a few minutes.
- If you are asked to exercise, you may have chest pain, breathlessness, lightheadedness, aching in your leg muscles, and fatigue. Report these to the technician. If the symptoms are severe, the exercise part of the test may be stopped.
- You will be asked to remain very still during each scan, which takes about 5 to 10 minutes. The camera will move to take more pictures at different angles. Several scans will be taken.