Fig. 4

Examples of CCTA images and VR images of AOCA patients. 1a CCTA image shows that the right coronary artery opens into the left coronary sinus and the beginning segment is narrowed (long arrow) and forms an opening together with the left main coronary artery (short arrow); 1b VR image for 1a image and the stenosis of its beginning segment is obvious (arrow). 2a CCTA image shows the right coronary artery (arrow) opening in the left coronary sinus; 2b VR image for 1a image, showing the right coronary artery (arrow) opening in the left coronary sinus