Is a heart scan better than a stress test?
Emily Schmidt
Updated on June 05, 2026
Noninvasive CT scans are significantly more effective at identifying coronary artery disease (CAD) in patients with chest pain than commonly performed exercise stress tests, according to a recent head-to-head comparison study.
Which is better stress test or heart scan?
Results of a head-to-head comparison study led by Johns Hopkins researchers show that noninvasive CT scans of the heart's vessels are far better at spotting clogged arteries that can trigger a heart attack than the commonly prescribed exercise stress that most patients with chest pain undergo.Is a coronary calcium scan better than a stress test?
Calcium scans can be more effective at identifying plaque build-up than compared to a stress test in some instances. For example, if all of a person's arteries are blocked, a stress test's measurement would look the same across the board and not show a concern.What is the best test to check for clogged arteries?
A CT coronary angiogram can reveal plaque buildup and identify blockages in the arteries, which can lead to a heart attack. Prior to the test, a contrast dye is injected into the arm to make the arteries more visible. The test typically takes 30 minutes to complete.Is cardiac MRI better than stress test?
MRI is much more accurate than both nuclear and echo stress, and a cardiac stress MRI provides more information than perfusion, including viability, function and morphology, at a much higher resolution than either nuclear or echo,” he says. Cardiac MRI is a well-validated tool.Detecting Heart Disease: Cardiac CT v. Stress Testing
What does an MRI scan of the heart show?
A heart MRI is a scan of your heart in which radio waves and magnets create images without anything you can see or feel going into your body. A cardiac MRI can show the parts of your heart (including chambers, valves and muscles) and how well they are working ― including how your blood moves.How long does the average person last on a stress test?
The test ends after maintaining your target heart rate long enough to capture readings about heart function, usually about 10 to 15 minutes.What is the most accurate heart test?
Coronary artery calcium score (CAC) was found to be the most accurate predictor of whether people would suffer one of these events, in a study published today in the Journal of the American Medical Association.Can you pass a stress test and still have blockage?
This severe narrowing is what causes the severe chest pain called angina. But normal results from a stress test do not rule out the possibility of a future heart attack. This is because a plaque can still rupture, form clots and block an artery. Heart attacks often result from these smaller blockages that rupture.What are the warning signs of clogged arteries?
Coronary artery disease signs and symptoms can include:
- Chest pain (angina). You may feel pressure or tightness in your chest. ...
- Shortness of breath. You may feel like you can't catch your breath.
- Fatigue. If the heart can't pump enough blood to meet your body's needs, you may feel unusually tired.
- Heart attack.
Is a heart scan worth it?
Heart scans are considered most useful for those with a known “moderate” risk of heart disease or for those whose risk is uncertain. Your risk for heart disease can be calculated based on your age, sex, blood pressure, cholesterol levels and tobacco use.Are coronary calcium scans worth it?
"A calcium scan is very useful if there's uncertainty about a person's risk of heart disease or the need for statins," he says. Recent studies show that findings from a calcium scan can help refine and sometimes reclassify a person's risk of cardiovascular disease.Can a chest CT scan show blocked arteries?
CT Scans Versus Stress Tests To Detect Clogged ArteriesAccording to a study by Johns Hopkins University¹, research shows that CT scans are effective for detecting the risk of developing clogged arteries. The study compared people who received CT scans to people who got stress tests.