先天性外中耳畸形面神经走形高分辨率CT研究

发布时间：2018-08-19 13:01

【摘要】：目的:采用SIEMENS SOMATOM Sensation 64层螺旋CT行颞骨高分辨扫描,探讨先天性外中耳畸形(CAEMA)面神经走形的特点,以利于术前评估。方法:选取2005-11-2007-03期间中山大学附属第二医院耳鼻咽喉科住院诊断为先天性外中耳畸形的29例(35耳)患者为研究对象,以畸形耳为研究组,其中单侧畸形23例(23耳,其中右耳13例,左耳10例),双侧畸形6例(12耳)。对照组为研究组中单侧畸形之健耳23例(23耳)。采用Takegosh以直角坐标系描述面神经走行的方法,借助高分辨率CT重建功能,于高分辨率CT上取3个层面获得面神经位置,描述面神经的走形。结果:研究组35耳,单侧畸形23耳,双侧畸形12耳,对照组23耳,CAEME面神经鼓室段与前庭窗的最短距离较正常组变短(P0.05);单侧CAEME面神经乳突段较正常组前移约2.7mm,双侧CAEME面神经乳突段较正常组前移约3.0mm,单双侧畸形组统计学分析示差异无统计学意义(P0.05);耳廓畸形程度与面神经乳突段前移有关(P0.05)。结论:先天性外中耳畸形无论单侧还是双侧,面神经乳突段较正常耳前移;耳廓畸形程度与面神经乳突段前移有关;面神经外侧移位并不常见;面神经鼓室段与前庭窗距离变短。
[Abstract]:Objective: to investigate the features of (CAEMA) facial nerve aberration in congenital external middle ear malformation by using SIEMENS SOMATOM Sensation 64 slice spiral CT scan of temporal bone. Methods: Twenty-nine patients (35 ears) with congenital external middle ear malformation were selected from the Department of Otorhinolaryngology, second affiliated Hospital of Sun Yat-sen University from November 2005 to March 2007. The study group included 23 cases (23 ears) of unilateral malformation, 13 cases of right ear. Left ear in 10 cases, bilateral malformation in 6 cases (12 ears). The control group consisted of 23 cases (23 ears) of unilateral malformation. Using Takegosh to describe the facial nerve walking in rectangular coordinate system, and with the help of high-resolution CT reconstruction function, the position of facial nerve was obtained from three layers on high-resolution CT, and the shape of facial nerve was described. Results: 35 ears of study group, 23 ears of unilateral malformation, 12 ears of bilateral malformation. The shortest distance between tympanum segment and vestibular window of 23 ears of the control group was shorter than that of the normal group (P0.05), and that of unilateral CAEME facial nerve mastoid segment was about 2.7 mm compared with the normal group, and that of bilateral CAEME facial nerve mastoid segment was about 3.0 mm compared with that of the normal group. The difference was not statistically significant (P0.05), and the degree of auricle deformity was related to the anterior movement of facial nerve mastoid segment (P0.05). Conclusion: the facial nerve mastoid segment is more advanced than the normal ear, the degree of auricle malformation is related to the anterior displacement of the facial nerve mastoid segment, the lateral displacement of the facial nerve is not common. The distance between the tympanic segment of the facial nerve and the vestibular window became shorter.
【作者单位】：江苏省中医院耳鼻咽喉科;中山大学第二附属医院耳鼻咽喉科;
【分类号】：R764.7

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