Association of coronary artery calcium with severity of myocardial ischemia in left anterior descending, left circumflex, and right coronary artery territories.

Background: An increasing coronary artery calcium score is associated with a higher likelihood of myocardial ischemia.

Hypothesis: The association of the coronary calcium score with myocardial ischemia in different coronary arteries needed to be investigated.

Methods: We correlated the coronary artery calcium (CAC) score with the severity of myocardial ischemia diagnosed by myocardial perfusion imaging in the left anterior descending (LAD), left circumflex (LCX), and right coronary artery (RCA) territories in 206 patients, mean age 66 years, without cardiac stents or coronary artery surgery.