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CT Angiography of Heart

A computerized tomography coronary angiogram or CT angiography of heart is an imaging test that looks into the arteries that supply heart with blood. Although CT coronary angiography checks heart for various conditions but primarily it is used to look for any narrowed arteries or blockages in the heart (coronary artery disease).

CT Angiography of Heart

The purpose of conducting a CT coronary angiogram is to examine and search for

  • Narrowing or blockage in the coronary arteries due to build-up of fat (cholesterol) (known as plaque) and calcium in the arteries.
  • Build-up of fluid around the heart & damage or injury in the heart valves
  • Bulge (aneurysm)in the aorta

What it detects

A CT angiogram can detect if a blood vessel is blocked, where the blockage exactly is and how big it is. It also shows whether there is a bulge (aneurysm) or a build-up of fatty material (plaque) in heart’s blood vessels.


Why CT Coronary Angiography is preferred

There are several benefits of this procedure

  • Non-invasive procedure
  • Lower risk of complications
  • Available in outpatient setting
  • Lower cost to patient
  • Less time consuming


During a CT coronary angiogram, the person to be examined is made to lie on a table that passes through a doughnut-shaped opening in the scanner. A special dye (known as contrast material) is put in a vein (IV) in the arm. The person is asked to hold breath and the table will move into the scanner.

Then the pictures are taken of the heart and coronary arteries in quick succession, in layers/slices. It is pain-free procedure and takes approximately 10 minutes.


  • Diabetics are asked to stop taking the Metformin on the day of CT scan and the following 24 hours
  • Fasting for 4 hours before the test is suggested
  • Before the test, the person is asked to change in a loose gown
  • No caffeine, alcohol, nicotine or any other stimulants 12 hours prior to the test


CT angiogram has some contraindications to it when it cannot be performed, such as

  • Pregnancy
  • Breast feeding
  • Allergic to certain medicines, including iodine dye
  • Have a heart condition, such as heart failure
  • Have a history of kidney problems
  • Have asthma
  • Have multiple myeloma
  • Claustrophobia, nervousness or fear in small spaces

CT angiography of the heart is the best non-invasive way to evaluate the heart arteries. Generally, this test is considered if you have symptoms of coronary artery disease but no prior history of the same. It is also the best method to analyze the status of heart if unclear findings are reported from a stress test. This important test is included in the Indus Health Plus full body checkup packages. If you have any doubts regarding health checkups or tests, contact us by filling the form below.

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