anatomic variants and anomalies detected by computedtomography angiography (CTA)Materials and methods: A retrospective study wasconducted on all patients undergoing coronary CTA using a64-detector row CT in the Radiology Department,Songklanagarind Hospital, from January 2010 to January2013. Data were recorded and analyzed.Results: The imaging results of 279 patients were reviewed.One hundred and twenty-two females (43.7%) and 157 males(56.3%) [age range, 26-82 years] were reviewed for coronaryartery variants and anomalies with post-processing images.The right coronary dominance was the most commondominant type (91.4%). The prevalence of ramus intermediuswas 68.8%; those of the absence of the left main coronaryartery and left circumflex artery were 0.4%, respectively; andof the high takeoff of the coronary artery was 3.6%.Anomalies of origin and course were detected as the rightcoronary artery originating from the left coronary sinus in1.1% of the patients. Myocardial bridging and coronaryfistulas were demonstrated in 55.6% and 0.7% of oursubjects, respectively.Conclusion: A coronary CTA can effectively represent thecomplex anatomy of the coronaries as well as their anatomicvariations and anomalies. The prevalence of most coronaryvariations were in concordance with the data of previousreports.