A 56-year-old man known with a positive family history and an active smoker status, with a normal stress test, was evaluated as having an intermediate cardiovascular risk. He was addressed for further risk stratification; a CAC of 33 was obtained enabling a reclassification as low risk of 10-year cardiovascular risk (Fig. 18.2).

This 69 year old man known for a two vessel coronary artery disease with a history of an infero-lateral transmural myocardial infarction, angioplasty of a circumflex artery chronic occlusion and an angioplasty of the Left anterior descending artery was addressed for reevaluation by coronary angio-CT of a left main coronary artery (LCA) stenosis. A 50% stenotic mixed plaque was found on the LCA as well as multiple diffuse calcified plaques. The CAC was measured at 2676, although in this case, did not modify patient management but illustrates however the strong correlation between the CAC and the severity of coronary disease. (Fig. 18.3
).