Surgery or transcatheter intervention in type B dissection may be indicated if there is occlusion of major aortic branches leading to end-organ ischemia or expansion of the aortic diameter or interval extension of the dissection flap.171MDCTallows imaging of the entire aorta and iliac system within seconds and allows delineating the
intimal flap extension into aortic arch vessels and the abdominal aorta and its branches as well as the iliac system, which may determine the feasibility of stent-graft repair.