Fig. 22From: Society for Cardiovascular Magnetic Resonance/European Society of Cardiovascular Imaging/American Society of Echocardiography/Society for Pediatric Radiology/North American Society for Cardiovascular Imaging Guidelines for the use of cardiovascular magnetic resonance in pediatric congenital and acquired heart diseaseAnomalous origin of the left main coronary artery (LMCA) from the right sinus in an off axis axial view (top left) and with a 3D reconstruction (top right). Lower panel is an endoscopic view of the same patient demonstrating the orifice origins and shapes; note the round right coronary artery (RCA) os and the oval LMCA osBack to article page