正常颞骨斜矢状面CT扫描的解剖学表现

目的 探讨听骨，内耳骨迷路及面神经骨管等结构在CT斜矢状面的影像学表现，方法 利用自制木架固定器对63只正常耳行直接斜矢状面扫描，所得影像与尸体颞骨解剖相对照。结果 显示外耳道，上鼓室，乳突窦，听小骨，面神经管乳突段及内耳骨迷路63只耳（100％），面神经管鼓室段42只耳（66．7％），面神经管膝部55只耳（87．3％），前庭导水管58只耳（92．1％），结论 直接斜矢状面扫描是继横，冠状面扫描之后的一个重要扫描方法 对耳疾病的诊断和临床手术有重要意义。

Direct oblique images of normal temporal bone using CT

Objective To study the direct oblique images of normal temporal bones such as facial nerve canal, ossical chain, otic capsule and other structures. Methods 63 normal temporal bones were examined on direct oblique CT. The images were compared with cadaveric bone. Results The direct oblique images clearly showed the external auditory meatus, epitympanum, mastoid antrum, ossical chain, mastoid facial canal, otic capsule, internal auditory canal in 63(100%) temporal bones, the tympanic facial canal in 42(66 7%), the anteriorgenu in 55(87 3%), and the vestibular aqueduct in 58(92 1%). Conclusion Besides axial and coronal CT, direct oblique CT scan is also an important imaging method, which may provide valuable evidence for diagnosis and operation about ear diseases.