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The Anatomical Study of the Value of Curved Planar Reformation CT of the Facial Nerve Canal in Middle Ear Surgery
宋光义1 韩丹1 刘俊华1 江超武2 李玉小2 廖承德1
1 云南昆明医学院第一附属医院影像中心CT室；2 耳鼻喉科
①SONG Guang Yi，HAN Dan，LIU Jun Hua，②JIANG Chao Wu，LI Yu Xiao，①LIAO Cheng De
①Department of Imaging，②Department of Otorhinolaryngology，the first affiliated hospital of kunming medical college，kunming，650032，china.
Abstrat
Objective：To evaluate the value of the multislice helical CT curved planar reformation（CPR）of the facial nerve in otological operation.
Method：20 adult head cadavers with 40 sides tempotal bone were examined by CT and curved planar reformatted，then were anatomized.the distance between the facialcanal and the landmarks were measured both on the image of CPR and cadavers.
Result：①the lateral semicircular canal.was displayed on the images of axial CPR，the shortest distance between the facial canal and the lateral semicircular canal was 1.74±0.29㎜，and the second geniculation was 2.47±0.51㎜.②the configuration of the fossa of the short process of the incus was similar with anatomy on the sagittal of CPR，the distance was 2.88±0.41㎜.③the sigmoid sinus was displayed on the conory of CPR，and the diatance was 8.97±2.72㎜㎜，the outcom of measurement as well as did the anatomy（P﹥0.05）.
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