主动脉附壁血栓(Aortic mural thrombus,AMT)主要继发于较严重主动脉粥样硬化、动脉瘤、动脉夹层及动脉炎等,多见于腹主动脉下段,紧贴内壁~([1])。主动脉CTA检查中偶尔见到胸腹主动脉甚至升主动脉内部分附壁、部分游离的漂浮血栓,其形成机制尚不明确。本文报道3例主动脉漂浮血栓(Aortic floating thrombus,AFT)的CTA表现及其在随访复查中的变化,希望引起放射科与临床医师的重视,以便及时有效的治疗。 Aortic mural thrombus (AMT) is mainly secondary to severe aortic atherosclerosis, aneurysm, dissection and arteritis, more common in the lower abdominal aorta, close to the wall ~ ([1]) . Aortic CTA occasionally seen in the thoracoabdominal aorta and even part of the ascending aorta wall, some floating floating thrombus, the formation mechanism is not yet clear. This article reports the CTA findings of 3 cases of aortic floating thrombus (AFT) and its follow-up changes in the follow-up review. It is hoped that radiosurgery and clinicians will pay attention to the timely and effective treatment.