What did my coronary CTA show?
A coronary CTA can identify plaque, show where and how much is present, describe its composition, and determine whether any area of an artery is significantly narrowed.
Calcified plaque
Hardened plaque that appears dense on CT.
Noncalcified plaque
Often called “soft” plaque; it may not appear on a calcium score.
Mixed plaque
Contains both calcified and noncalcified components.
Simplified illustrations. Your CTA report provides the clinical detail that matters for your care.
Does having plaque mean my arteries are blocked?
Not necessarily. Plaque burden and stenosis describe two different things.
Plaque burden
How much atherosclerosis is present throughout the coronary arteries.
Stenosis
How much a particular area of plaque narrows a specific artery.
A person can have plaque without a severely narrowed artery. Some people have a meaningful amount spread throughout the coronary arteries without a single critical blockage. That is why risk is not determined only by asking, “What percentage is my artery blocked?” The overall amount of plaque matters, too.
What does this mean for my future heart risk?
Coronary plaque usually develops gradually over many years. Blood tests and traditional risk factors estimate the likelihood of cardiovascular disease. A coronary CTA adds different information because it can directly show whether coronary atherosclerosis is already present.
When plaque is present, prevention becomes more important—even when there is no severe blockage. The goal is to identify what is contributing to plaque development and reduce the chance that plaque progresses or causes a future cardiovascular event.
Why did I develop coronary plaque?
There is usually no single cause. Risk develops from a combination of factors accumulated over many years.
These areas interact. Your prevention plan should account for the combination—not one number in isolation.
Factors you cannot change
- Age
- Genetics and family history
- Lipoprotein(a), or Lp(a), which is largely inherited
Factors we can target
- LDL cholesterol and ApoB
- Blood pressure and metabolic health
- Smoking and nicotine exposure
- Activity, fitness, nutrition and sleep
You cannot change your age or genes, but you can often substantially change the factors that influence whether existing plaque continues to progress.
What can I do to lower my risk?
Finding plaque gives us an opportunity to intervene. Depending on your individual profile, the plan may include lifestyle changes, medication, or both.
Lower atherogenic cholesterol
LDL-containing particles contribute directly to atherosclerosis. LDL-C, non-HDL cholesterol, ApoB and other markers help guide treatment.
Control blood pressure
Home readings can be useful because trends often tell us more than one measurement in the office.
Improve metabolic health
Blood sugar, A1c, triglycerides, waist circumference and body composition provide useful context.
Exercise and improve fitness
Aerobic activity and resistance training support fitness, blood pressure, glucose control and body composition.
Eat for cardiovascular health
Emphasize plants, legumes, whole grains, nuts, fish, unsaturated fats and adequate protein; limit excess processed food, refined carbohydrate, saturated fat and sodium when appropriate.
Avoid nicotine and prioritize sleep
Smoking is a major modifiable risk. Poor sleep and untreated sleep apnea can also affect blood pressure and metabolic health.
What happens next?
Your physician will combine the CTA findings with your cholesterol and ApoB, Lp(a), blood pressure, metabolic health, symptoms, family history and lifestyle.
Possible next steps may include:
Calcium score vs coronary CTA
Coronary calcium score
A noncontrast CT scan that detects and measures calcified coronary plaque.
Coronary CTA
Uses CT imaging and intravenous contrast to show the coronary arteries, identify calcified and noncalcified plaque, and evaluate narrowing.
These tests provide related—but different—information about cardiovascular disease.
When should I talk with my healthcare team?
Review your CTA with your healthcare team so the findings can be interpreted in the context of your symptoms, risk factors and overall health.
Key Takeaways
- A coronary CTA can directly show coronary atherosclerosis.
- Plaque can be present without a severe blockage.
- Total plaque burden matters—not only one narrowing percentage.
- Some risk factors are inherited; many others can improve.
- The goal is to use what we find to guide prevention.
Clinical references
- RadiologyInfo: Coronary CTA (CCTA)
- American College of Cardiology / CardioSmart: Coronary artery disease patient education
- National Heart, Lung, and Blood Institute: Coronary heart disease
- American Heart Association: Cholesterol, blood pressure and cardiovascular prevention resources
- CDC: Heart disease prevention and cardiovascular risk-factor resources
This education page provides general information and is not a substitute for individualized medical advice, diagnosis or treatment. Discuss your results and treatment decisions with your healthcare professional.