目的  探讨颞骨内面神经管各段及邻近结构在斜矢状断面上的形态规律及影像学表现，为该区影像诊断及外科手术提供形态学依据。 方法  取15例成人颞骨利用火棉胶包埋薄层切片技术制作成层厚1.00 mm的斜矢状位连续薄层断面标本，并与之对应的HRCT扫描图像进行对照研究。  结果  斜矢状断面可良好显示颞骨内面神经管及其邻近结构对面神经膝部，面神经水平段及垂直段、前庭导水管等结构显示最好。面神经垂直段全长(14.95±1.31)mm，面神经第二膝转折处夹角约(108.01±10.23)°，薄层断面与HRCT图像有良好的对应关系。 结论  斜矢状面扫描是补充横断、冠状面扫描缺陷的一个重要扫描方法；结合切片、HRCT进行对照研究,为颞骨内疾病的影像学诊断和临床手术提供准确的断层形态资料。

         Objective  To explore morphological and imaging features of the inner segment facial nerve in temporal bone on the sagittal plane, and provide sectional anatomic data for clinical image diagnosis and treatment of temporal diseases.  Methods   Temporal tissue of fifteen cadavers were sliced to sagittal sections with the thickness of 1.00 mm, using the celloidin embedding technique, and then analyzed and compared with the images of high resolution computerized tomography (HRCT).  Results   The sagittal images could preferably delineate anatomical details of the inner segment of facial nerve in the temporal bone and its adjacent structures, and display better the genu, the horizontal and vertical segments of the facial nerve and the vestibular aqueduct. The total length of the vertical segment of facial nerve was （14.95±1.31）mm. The included angle of the geniculate ganglion was about （108.01°±10.23°）. A good overall correlation exited between the sagittal slices and HRCT images，as an addition to the discrepancy of the traverse and coronal scan.  Conclusions  The sagittal HRCT scan of the temporal bone is an important imaging method. The celloidin embedding slices, used in conjunction with the HRCT, and provides precise information to image diagnosis and operation of the temporal bone.