A cardiac CT scan is a non-invasive imaging test that uses X-rays and computer technology to create detailed images of the heart and nearby blood vessels. Depending on the type of scan, it can help evaluate the coronary arteries, calcium buildup, heart structures and other cardiovascular conditions.
Unlike a conventional cardiac catheterisation procedure, a cardiac CT scan does not require inserting a catheter into the heart. It provides detailed anatomical information that helps doctors assess cardiovascular health and plan further treatment when needed.
A cardiac CT scan may be recommended when a doctor needs detailed information about the heart or blood vessels that may not be available from a routine ECG or echocardiogram. Common reasons include:
The specific type of cardiac CT depends on the patient’s symptoms, medical history and the information the cardiologist needs.
A cardiac CT scan may be recommended for people with symptoms or risk factors suggesting possible cardiovascular disease. Your cardiologist may consider the test if you have unexplained chest pain, an abnormal result from another cardiac test, or risk factors such as diabetes, high blood pressure, high cholesterol or a family history of heart disease.
Not everyone needs a cardiac CT scan. The decision depends on your clinical condition and whether the scan is likely to help with diagnosis or treatment planning.
Different cardiac CT techniques provide different types of information about the heart.
Coronary CT angiography, also called CCTA, uses CT imaging, usually with contrast dye, to create detailed images of the coronary arteries. It can help identify plaque, narrowing or blockages in selected patients.
A calcium score CT scan looks for calcium deposits in the coronary arteries. The result can help doctors assess calcified plaque and cardiovascular risk in appropriate patients.
Cardiac CT can also provide detailed anatomical information about the heart, valves, aorta and surrounding structures. It may be used to plan selected cardiac procedures or evaluate complex heart conditions.
A cardiac CT scan is usually a quick, non-invasive procedure. The process generally involves the following steps:
Your medical history, medications and relevant health conditions are reviewed. Depending on the type of scan, you may be asked to avoid food or drinks for a specific period. If contrast is required, your doctor may also assess kidney function and ask about previous reactions to contrast agents.
You lie on a movable table that passes through the CT scanner. ECG monitoring may be used to synchronise the images with your heartbeat. If contrast is required, it is injected through an intravenous line. You may be asked to hold your breath briefly while the images are captured.
The radiology team reviews the images and prepares the report. If contrast was used, you may be advised to drink adequate fluids, depending on your medical condition. Most patients can return to their usual activities soon after the scan unless their doctor advises otherwise.
A cardiac CT scan provides detailed images of the heart and blood vessels without an invasive, catheter-based procedure. It can help detect coronary artery plaque or narrowing in appropriate patients and provide anatomical information for treatment planning. It can also be useful when doctors need more detailed imaging than routine cardiac tests can provide.
Cardiac CT involves exposure to a small amount of radiation. When contrast dye is used, there is a possibility of an allergic reaction or kidney-related complications, particularly in people with existing kidney problems.
Pregnancy, kidney disease, previous reactions to contrast, and other medical conditions should be discussed with your doctor before the scan. Your cardiologist or radiologist can assess whether the benefits of the test outweigh its potential risks.
Sparsh Hospital provides advanced diagnostic and cardiac care supported by experienced cardiologists, radiologists and multidisciplinary specialists. Its diagnostic facilities include CT scans and other advanced imaging services, while the Cardiac Sciences team provides cardiac evaluation, CT angiography and comprehensive heart care.
The combination of cardiac and diagnostic expertise allows imaging findings to be considered alongside the patient’s symptoms, medical history and other investigations.
Sparsh Hospital offers advanced imaging and cardiac services across multiple Bangalore locations, including Infantry Road, Hennur, RR Nagar, Yelahanka, Yeswanthpur and Sarjapur Road. Patients looking for a cardiac CT scan hospital in Bangalore can consult a cardiologist to determine the appropriate scan and location based on their needs.
No. A cardiac CT scan is generally painless. You may feel a brief sensation when contrast dye is injected, if your scan requires contrast.
The scanning itself is usually completed within a short period, although the overall appointment may take longer because of preparation, ECG monitoring and contrast administration when required.
Coronary CT angiography can show plaque and narrowing in the coronary arteries and may help evaluate suspected coronary artery disease in appropriate patients.
CT coronary angiography is a specific type of cardiac CT that uses contrast to create detailed images of the coronary arteries. The term cardiac CT can refer to several different heart imaging techniques.
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