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Cardiac CT Scan for Calcium Scoring

A cardiac CT scan for coronary calcium is a non-invasive way of obtaining information about the presence, location and extent of calcified plaque in the coronary arteries.

Cardiac CT Scan for Calcium Scoring

Why it is done?

Cardiac CT scan for calcium scoring is done to determine if any coronary artery disease is present and if it is then to what extent? It is a screening study recommended for patients who are at risk for coronary artery disease but do not have any clinical symptoms.

What it detects?

Calcified plaques form due to build-up of fat and other substances under the inner layer of the artery. This material can calcify, leading to atherosclerosis (hardening or clogging up of arteries which in turn cause coronary artery disease. People with this have an increased risk for heart attacks.

Now, since calcium is a marker of coronary artery disease, the amount of calcium detected on a cardiac CT scan is a helpful in predicting the future disease status.

The findings of cardiac CT are denoted as 'calcium score'

The extent of coronary artery disease is graded according to the following calcium score:

Calcium Score Presence of CAD


No evidence of CAD


Minimal evidence of CAD


Mild evidence of CAD


Moderate evidence of CAD

Over 400

Extensive evidence of CAD


  • Convenient and non-invasive

  • Less time consumption

  • Causes no pain or discomfort

  • Does not require injection of contrast material

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