Objective: The aim of our study was to assess the prevalence of coronary artery anomalies in patients who underwent
coronary computed tomography angiography (coronary CTA) for suspected or known coronary artery disease.
Materials and Methods: A retrospective study included a total of 842 patients who underwent coronary CTA because of
known or suspected coronary artery disease. Coronary CTA were retrospectively reviewed by two radiologists experienced
in cardiovascular and thoracic radiology. In each study, coronary artery anomalies [CAs] were investigated.
Results: A total of 842 patients (mean age 50.5+10.9) were reviewed for coronary artery anomalies. The overall prevalence of CAs in the present study is 3.9%, with the following distribution: 5 single coronary artery, 11 anomalous origins from opposite sinus of Valsalva, 2 absent left main, 3 high take-off coronary artery, 3 anomalous left coronary arteries from the pulmonary artery, and 9 coronary artery fistulas.
Conclusion: Coronary CTA is a reliable noninvasive tool that allows accurate delineation of coronary arterial anomalies in
an appropriate clinical setting and provides detailed 3-dimensional anatomic information that may be difficult to obtain with invasive coronary angiography.

Keywords: Anomalous coronary artery, Prevalence, Coronary CTA