Figure 7b. Bentall procedure in a 42-year-old man with a Stanford type A aortic dissection. (a) Preoperative reformatted CT image shows a thin intimal flap in the ascending aorta (arrow). (b) Postoperative reformatted CT image shows the composite graft and mechanical aortic valve used to replace the aortic root, as well as the reimplanted left coronary artery (arrow), which is attached to the composite graft.