Fig. 1
a The volume rendering image shows the right coronary artery (RCA) arising from the sinotubular junction just in between the left and right coronary sinus of Valsalva (arrow) and courses anteriorly between the aortic root and the pulmonary artery into the right atrioventricular groove. There is a saccular aneurysm (small arrows) in the proximal portion of the RCA. b Curved multiplanar reformatted image of the RCA shows an acute take-off angle of the origin (arrow) and ring calcification and narrowing of the aneurysmal segment caused by a mural thrombus.