The diagnostic imaging with different modalities of aortic dissection, intramural hematoma/ hemorrhage and penetrating athrosclerotic ulcer is described in present review article with a brief comment on the pathog enetic mechanisms.

• 本文论述主动脉夹层、壁间血肿/血和穿透性粥样硬化性溃疡的影像学诊断,并简要探讨其发病机制。