What is a cardiac CT (calcium scoring test)?
A cardiac CT, also called a calcium scoring test, is a special kind of X-ray that checks for calcium buildup in the arteries around your heart. The more calcium there is, the higher your risk of heart disease. This test helps doctors find early signs of heart problems before symptoms start.
Who is a candidate for a cardiac CT?
This test is usually for people who may be at risk of heart disease but don’t have any symptoms. You may be a candidate if you:
- Are over age 40 and have risk factors like high blood pressure, high cholesterol or diabetes.
- Have a family history of heart disease
- Smoke or used to smoke
- Are overweight or don’t exercise regularly
- Want to know your heart risk before starting a new health plan
It’s not usually done for people who already have known heart disease or symptoms like chest pain.
What to expect during a cardiac CT
The test is quick and painless.
- You’ll lie on a table that moves into a CT machine (it looks like a big donut)
- Sticky patches with wires (electrodes) will be placed on your chest to track your heartbeat
- You may be asked to hold your breath for a few seconds while the machine takes pictures
- The whole test usually takes about 10 to 15 minutes
- No needles or contrast dye are used in this test
You don’t need to change clothes unless you’re wearing something with metal.
What are the risks for a cardiac CT?
A cardiac CT uses a small amount of radiation, but the risk is very low.
- It’s considered safe for most people
- It’s not recommended during pregnancy
- It may not be needed if you already have heart disease or are getting other heart tests
Your doctor will only order the test if it makes sense for your health.
What does recovery from a cardiac CT entail?
There’s no recovery time after this test.
- You can return to normal activities right away
- There are no side effects, pain or downtime
- Your doctor will go over your calcium score and explain what it means
- Depending on your results, they may recommend lifestyle changes, more tests or medicine to protect your heart