Cardiac PET/CT Scan
A cardiac positron emission tomography (PET) scan is a nuclear imaging test that creates detailed 3D images of the heart. These exams can provide more accurate and efficient images with less radiation than other types of nuclear stress tests.
How a Cardiac PET/CT Scan Works
The cardiac PET scan is typically an outpatient procedure. At Modern Heart and Vascular, it will last about 45 minutes. Your doctor will provide instructions about how to prepare, including information about when to stop eating or drinking before your test and how to take your medications.
At the start of the process, the technologist will insert an IV for the tracer and attach electrodes to monitor your heart rate throughout the test. Once the tracer has been injected, you’ll wait for your body to absorb the dye before moving onto the imaging stage.
After a few minutes, you’ll lie flat and still on a narrow table attached to the PET machine. This machine will take thin scans of your heart from several angles, allowing for the clearest possible picture. The radioactive tracers will show which parts of the heart receive enough blood and which areas don’t. Your doctor can use these pictures to learn a lot about your heart’s condition.
Purposes of a Cardiac PET/CT Scan
There are many reasons a cardiologist would order a PET scan. PET/CT scans for cardiology create 3D images of the heart, concentrating on diseased or injured areas. These pictures allow your doctor to differentiate between types of damage, whether caused by coronary artery disease (CAD), heart failure, a heart attack or something else. Identifying and diagnosing specific conditions gives you a significant advantage concerning the treatment and further care.
These scans also enable your doctor to monitor and evaluate progress over time, so they can see how well a certain treatment is working or what changes are occurring within your heart.
Cardiac PET vs. CT Scans
Patients often wonder about the difference between cardiac PET and CT scans. CT scans are non-invasive and use X-rays, while PET scans are minimally invasive procedures requiring an injection of radioactive dye. Unlike 3D PET scans that monitor the processes in your heart, CT scans create 2D images of structures, like blood vessels, bones and soft tissue.
This page does not provide medical advice. It is intended for informational purposes only. It is not a substitute for professional medical advice, diagnosis or treatment. If you need cardiovascular care, please call us at 832-644-8930.