Coronary anomalies: cardiac CT evaluation of the symptomatic adult athlete.

Cardiac CT has become widely available as a diagnostic test. It is noninvasive, low risk (for contrast allergies), quick, and highly sensitive for identifying the coronary origins and course. Two coronary anomalies, the left main artery from the right sinus of Valsalva, and the right coronary artery originating from the left sinus, have been associated both with myocardial ischemia and sudden cardiac death when they course between the aorta and pulmonary arteries. These anomalies can go undetected into adulthood. The yield of noninvasive exercise testing is low. In the past, the ability to demonstrate these anomalies depended on a high index of suspicion and an aggressive invasive work-up with cardiac catheterization. Now cardiac CT can demonstrate these anomalies with ease and facilitate appropriate treatment.