The prevalence of CAF at coronary CTA was 0.9%, which is higher than the known prevalence based on conventional angiographic findings (0.05-0.25%). Furthermore, the most common type of CAF in this study was coronary to pulmonary artery, whereas coronary artery to ventricle fistula was previously considered the most common type in studies conducted with conventional angiography. Coronary CTA is a useful, noninvasive imaging modality for the detection of CAF.

An anomalous origin of a coronary artery is a rare congenital anomaly. Conventionally, the diagnosis of coronary artery anomalies is performed by coronary angiography. Currently developed multidetector computed tomography has permitted better definition of the coronary arteries, however. Multidetector computed tomography could be used effectively in the diagnosis and evaluation of the postoperative status of a patient with an anomalous origin of the right coronary artery from the left sinus of Valsalva between the aorta and pulmonary trunk.