Coronary Computed Tomography Angiography (CTA) of Cardiac Structures and Coronary Arteries
This contrast-enhanced computed tomography exam uses iodine-based intravenous contrast to highlight the heart’s four cardiac chambers, atrioventricular and semilunar valves, full coronary artery network, adjacent cardiac veins, and mediastinal lymphatic vessels. The procedure delivers minimal ionizing radiation, carries low claustrophobia risk, and takes approximately 15 minutes to complete. It is clinically indicated to detect coronary artery atherosclerotic plaque, evaluate structural cardiac anomalies, assess valvular pathology, and rule out acute coronary syndrome in patients with unexplained chest pain.
Coronary CTA is a low-radiation, contrast-enhanced CT exam that images the heart’s chambers, valves, coronary arteries, and associated cardiovascular structures to diagnose coronary artery disease, congenital cardiac anomalies, and causes of acute chest pain.
Key facts at a glance
- Modality
- ct
- Body part
- chest · cardiac
- Contrast
- iodinated
- Contrast route
- iv
- Ionizing radiation
- true
- Radiation dose
- 7
- Duration (min)
- 15
- Preparation
- fasting-4h
- Pregnancy safe
- false
- Pediatric safe
- true
- Breastfeeding safe
- true
- Claustrophobia risk
- low
- Metal implant safe
- safe
- Sedation
- none
- LOINC
- 79092-2
- SNOMED
- 419545005
- Result turnaround
- 24-48h
- Availability
- elective
- Setting
- any
- Cost tier
- high
Understanding CT Scan of heart
Computed Tomography provides detailed visualization of heart. Contrast material highlights vascular structures and improves tissue differentiation. The procedure uses controlled radiation to create precise images with excellent anatomical detail.
Clinical Indications
This evaluation helps detect arterial blockages, identify aneurysms, assess blood flow patterns, and guide vascular interventions.
What to Expect
The procedure typically takes 15 minutes. You may experience a brief warm sensation as contrast is administered. The examination is painless and non-invasive.
How to read the report
- Results reviewed by board-certified radiologist.
- Report transmitted to referring physician.
What Is This Procedure?
This ct scan evaluates cardiac, specifically heart. Uses contrast dye to enhance visualization of internal structures. Uses controlled radiation to create detailed images.
What Does It Show?
Detailed images of heart and coronary arteries. Part of the cardiovascular system.
Common Uses
This exam is commonly used to detect arterial blockages, evaluate blood flow, identify aneurysms, and assess vascular disease.
What to Expect
The procedure takes approximately 15 minutes. You may feel a warm sensation if contrast is used.
Severe pain at procedure site
urgentWorsening severe pain with fever or other symptoms. Go to urgent care or ER.
Mild symptoms after procedure
promptMild discomfort or symptoms that don't improve. Contact your doctor.
Severe allergic reaction (anaphylaxis)
emergencyDifficulty breathing, swelling, rapid heartbeat after contrast. Call 911 immediately.
Call 911 immediately
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 9, 2026. · Read our editorial policy