Quick Summary
- A Calcium Score CT measures plaque buildup in your heart’s arteries
- The exam is fast, painless, and uses no contrast
- Your score helps estimate your risk of heart disease
- Results can guide lifestyle changes or treatment decisions
- It’s one of the best early-detection tools for cardiac risk
A Calcium Score CT is a simple, noninvasive test that measures calcium buildup in the arteries of your heart. If your provider ordered this exam — or if you’re considering it for your own health — you may wonder what the test shows and whether it’s right for you.
This guide explains what a Calcium Score CT is, who benefits most from it, and what to expect during the procedure.
What Is a Calcium Score CT?
A Calcium Score CT (also called a Coronary Artery Calcium Scan) uses a low-dose CT scanner to detect and measure calcium deposits in the coronary arteries. These deposits are early signs of atherosclerosis — plaque buildup that can increase the risk of heart attack.
A Calcium Score CT is especially helpful for:
- Patients with a family history of heart disease
- People with borderline or intermediate heart disease risk
- Adults with high blood pressure or high cholesterol
- Smokers or former smokers
- Patients with diabetes or pre-diabetes
- Anyone wanting a clearer picture of their heart health
The test is quick, highly accurate, and provides personalized insight into your cardiovascular risk.
How Does the Calcium Score Work?
After your scan, you’ll receive a coronary artery calcium (CAC) score, which estimates your risk of heart disease.
Score Ranges (General Guidelines):
- 0 → No detectable plaque; very low risk
- 1–99 → Mild plaque; low to moderate risk
- 100–299 → Moderate plaque; moderately increased risk
- 300+ → Significant plaque; higher risk
Your provider uses this score — along with your age, family history, cholesterol levels, and lifestyle — to create a personalized prevention plan.
Why Providers Recommend It
- Helps detect heart disease early
- Useful for people with uncertain or “middle-range” cardiac risk
- Guides decisions about medication and lifestyle
- Noninvasive and quick
- No contrast needed
- Uses low radiation
What the Exam Shows
- Amount of calcium in coronary arteries
- Presence of plaque buildup
- Whether your arteries are aging faster than expected
- Your 5- to 10-year risk of heart events
- Whether preventive treatment may help
What About Comfort During the Exam?
Calcium Score CT is one of the easiest imaging tests for patients. The exam is extremely fast and does not require contrast, needles, or any special preparation.
At our clinic:
- The exam typically takes 5–10 minutes
- You’ll lie on a padded table that moves through an open CT scanner
- Sticky patches (electrodes) may be placed on your chest to monitor heart rhythm
- You may be asked to hold your breath briefly during the scan
- There is no pain and no enclosed feeling
- You can return to your normal activities immediately afterward
Most patients find the experience simple and reassuring — and many appreciate having a clear picture of their heart health.