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为描述和阐明经主动脉弓平面横断层、纵隔内结构的解剖学特征，为医学影像ＣＴ、ＭＲＩ提供解剖学依据，把经防腐固定的３０具成年男性尸体制成间距为１．２ｃｍ的连续横断层标本，进行观察。①主动脉弓和奇静脉弓在同一横平面占２０．００％±７．３０％，４０．００％±８．９４％的奇静脉弓在主动脉弓凹面平面；②８０．００％±７．３０％的主动脉上隐窝上界位于主动脉弓右前端头臂干起始处；③在主动脉弓平面，腔静脉后淋巴结位于主动脉弓、上腔静脉和气管之间，出现率为１００％；④在奇静脉弓平面，奇静脉弓淋巴结和主动脉上隐窝位于上腔静脉、奇静脉弓、气管和主动脉凹面所围成的气管前间隙内。结论：主动脉弓和奇静脉弓是识别主动脉上隐窝、淋巴结等结构的重要标志，它们在ＣＴ和ＭＲＩ影像学上具有重要的意义。
In order to describe and elucidate the anatomical features of plane aortic arch and mediastinum structures and to provide anatomic evidence for CT and MRI of medical images, 30 anticorrosive adult male cadavers were made into continuous transverse slices with a spacing of 1.2 cm Specimens were observed. ① aortic arch and azygos vein in the same horizontal plane accounted for 20.00% ± 7.30%, 40.00% ± 8.94% of the aortic arch in the aortic arch concave plane; ② 80.00% ± 7.30% of the main The upper boundary of the crypt of the artery is located at the beginning of the brachiocephalic trunk at the right forearm of the aortic arch; ③ in the plane of the aortic arch, the posterior vena cava lymph node is located between the aortic arch, superior vena cava and trachea, and the incidence rate is 100% The apex of the saphenous vein and the aorta are located in the anterior tracheal space surrounded by the superior vena cava, the azygos bow, the trachea, and the concave surface of the aorta. Conclusion: The aortic arch and the azygos arch are important markers for identifying the structures of crypts and lymph nodes in the aorta. They are of great significance in the imaging of CT and MRI.