| 张玮,马明平,王一红,王晓燕,童永秀,罗敏,曹稳福,郑礼禄.高分辨率CT观察正常人后鼓索神经小管及其毗邻关系[J].中国医学影像技术,2021,37(1):40~44 |
| 高分辨率CT观察正常人后鼓索神经小管及其毗邻关系 |
| High resolution CT observation on posterior canaliculous of chorda tympani and adjacent relationships in normal people |
| 投稿时间：2020-01-02 修订日期：2020-04-19 |
| DOI：10.13929/j.issn.1003-3289.2021.01.008 |
| 中文关键词: 鼓索神经 面神经 解剖学 体层摄影术,X线计算机 |
| 英文关键词:chorda tympani nerve facial nerve anatomy tomography, X-ray computed |
| 基金项目:福建省卫生计生委青年科研课题（2015-2-2）。 |
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| 中文摘要: |
| 目的 应用高分辨率CT （HRCT）观察各年龄段健康人后鼓索神经小管（PCCT）及其毗邻关系。方法 对108名健康人采集颞骨HRCT，按年龄间隔10岁分为6组，每组18名，记录PCCT起始位置，测量其与面神经管乳突段（MSFC）及第二膝、外耳道后壁、圆窗下缘、砧骨短突最后缘的距离及角度，比较不同性别、侧别、不同年龄组间各参数差异。结果 101名PCCT均起自MSFC，7名起始于茎乳孔外；105名PCCT为单干线型，3名双侧均为单干双支型；不同性别间各参数差异无统计学意义（P均>0.05）；左侧与右侧PCCT起始点与面神经管第二膝距离差异有统计学意义（t=2.29，P=0.02）；不同年龄组双侧PCCT与MSFC连线中点至圆窗下缘距离差异均有统计学意义（F=2.50、3.35，P均<0.05）。结论 HRCT可用于术前充分评估PCCT起始位置、走行及毗邻关系，有助于避免或降低耳蜗植入术及后鼓室成形术中神经损伤风险。 |
| 英文摘要: |
| Objective To observe the characteristics of posterior canaliculous of chorda tympani (PCCT) and its adjacent relationships in different aged healthy subjects with high resolution CT (HRCT). Methods Temporal bone HRCT of 108 healthy subjects were collected and divided into 6 groups according to age interval of 10 years (each n=18). The originating position of PCCT was recorded. The distance and angle between PCCT and the mastoid segment of facial canal (MSFC) and the second knee, posterior wall of the external auditory canal, inferior edge of the round window and posterior edge of the short process of the incus were measured. The above parameters were compared between different genders, left and right sides and among different age groups. Results PCCT originated from MSFC in 101 subjects, while originated outside the stylomastoid foramen in 7 ones. Single-trunk linear type PCCT was observed in 105 subjects, while single-trunk and double-branch type on both sides were found in 3 subjects. No statistical difference of these parameters was detected between different genders (all P>0.05). The distance of the origin of left and right PCCT and the second knee of the facial nerve canalin was statistically significant (t=2.29, P=0.02). There were significant differences of the distance of the middle point of the connection between PCCT and MSFC and the inferior edge of the round window in the left and right side among different age groups (F=2.50, 3.35, both P<0.05). Conclusion HRCT could be used for fully preoperative evaluation on the originating position, course and adjacent relationships of PCCT to avoid or reduce the risk of nerve injury during cochlear implantation and posterior tympanoplasty. |
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