Figure 6c. Triple-barreled aortic dissection in a 41-year-old man after surgical replacement of the ascending aorta for a DeBakey type I aortic dissection. (a, b) Axial CT scans (a at a level higher than b) show a dissection of the thoracic aorta. (c, d) Axial CT scans obtained 5 months later (c at a level higher than d) show complex dissection flaps (arrowheads).