The result of the test is usually given as a number called an Agatston score. The score represents a combination of information that reflects the total area of calcium deposits and the density of the calcium.

A score of zero means no calcium is present in the heart and suggests a low likelihood to develop a heart attack in the future. When calcium is present, the higher the score, the higher the risk of attacks in the long term. A score of 100 to 300 — moderate plaque deposition — is associated with a relatively high risk of heart attack or other heart disease over the next three to five years. A score greater than 300 indicates very high to severe disease and heart attack risk.

You also may receive a percentile score, which indicates your amount of calcium relative to people of the same age and sex.

Discussing results with your doctor

Your doctor will discuss the results of the heart scan with you. Depending on the outcome, he or she may recommend:

  • Continuing the current course of treatment
  • Changing medications
  • Changing your diet and exercise routine
  • Setting new weight-loss goals
  • Ordering additional tests
  • Planning for follow-up appointments to monitor your health and adherence to a treatment plan