Axial maximum intensity projection CT angiography image showing coronary abnormality in a TGA patient after ASO. The right coronary artery is seen arising from the LM and coursing anterior to the RVOT before entering into the right atrioventricular groove.Ao: neo-aortic root, ASO: arterial switch operation, CT: computed tomography, LM: left main trunk, RCA: right coronary artery, RVOT: right ventricular outflow tract, TGA: transposition of the great arteries.