面神经鼓乳段在斜矢状断面与HRCT上的定位及临床意义

中国临床解剖学杂志 ›› 2012, Vol. 30 ›› Issue (3): 295-298.

面神经鼓乳段在斜矢状断面与HRCT上的定位及临床意义

钟斌¹，　李清锋²，　周曼³，　段菊如⁴，　吴英宁²，　黄昌盛¹

1.右江民族医学院解剖学教研室；　2.右江民族医学院附属医院放射科；　3.右江民族医学院
2008级临床医学本科3班，百色 533000；　4.南昌大学医学院解剖学教研室，南昌 330006

收稿日期:2011-09-24 出版日期:2012-05-25 发布日期:2012-06-06
作者简介:钟斌（1978-），男，广西昭平县人，硕士，讲师，从事断层影像解剖学研究,Tel:0776-2849479
基金资助:
广西教育厅科技项目（桂教科研[2009]25号,项目编号200911LX343）

The tympanic and mastoid segments of facial nerve: the location on the oblique sagittal section and HRCT and clinical significance

ZHONG Bin¹，LI Qing-feng²，ZHOU Man³，DUAN Ju-ru⁴，WU Ying-ning²，HUANG Chang-sheng¹

1. Department of Anatomy，You Jiang Medical College for Nationalities; 2.Department of Radiology，Affiliated Hospital of You Jiang Medical College for Nationalities; 3. Clinical Undergraduate class 3 grade 2008，You Jiang Medical College for Nationalities，Baise 533000，China；4. Department of Anatomy，Medical College of Nanchang University，Nanchan 330006，China

Received:2011-09-24 Online:2012-05-25 Published:2012-06-06

摘要/Abstract

摘要：

目的　探讨面神经鼓乳段在斜矢状位最佳显示的扫描基线，为面神经鼓乳段疾病的影像诊断和耳显微外科手术治疗提供解剖学依据。方法　利用HRCT对16例(32耳) 外观无异常的成人颅骨标本行斜矢状位扫描获得层厚为0.625 mm的HRCT图像后，再用火棉胶包埋技术将颞骨标本切制层厚为1mm的连续斜矢状断面标本，选取面神经鼓乳段显示良好的CT图片与对应的切片标本对照观测。结果　16例（32耳）在斜矢状位均可完整显示面神经鼓乳段全程，面神经鼓乳段全长为（23.58±1.44）mm，鼓室段到外半规管的距离为（0.75±0.12）mm，面神经鼓室段到鼓室的距离为（0.34±0.08）mm，鼓室段和乳突段的夹角为（108.88±2.49）度。结论　颞骨斜矢状位HRCT图像结合对应切片标本能良好显示面神经鼓乳段及其周围结构的解剖位置和毗邻关系，以与正中矢状面成（21.40±4.35）度为扫描基线作斜矢状位扫描显示面神经鼓乳段最佳，对颞骨的影像诊断和耳显微外科手术治疗具有重要意义。

关键词: 面神经鼓乳段, HRCT, 斜矢状位, 断面解剖

Abstract:

Objective　To investigate the optimal scan baseline of the tympanic and mastoid segments of facial nerve on the oblique sagittal sections, and provide anatomic basis for image diagnosis and microsurgical application.　Methods　The high resolution CT was used to scan 16 cadaveric specimens (32 ears) on the oblique sagittal plane，after that, celloidin embedding was used to cut and obtain oblique sagittal sections of temporal bone with the thickness of 1mm. CT and specimen section images were analyzed and compared. Results　All of 16 specimens (32 ears) showed the course of tympanic and mastoid segments of facial nerve on CT oblique sagittal plane, with the length of （23.58±1.44）mm. The distance from the tympanic segment to external semicircular canal was（0.75±0.12）mm，from tympanic segment of the facial nerve to the tympanic cavity （0.34±0.08）mm，and the angle between tympanic segment and mastoid segment was（108.880±2.490）. Conclusions　The oblique sagittal HRCT images combined with the corresponding specimen sections are reliable for displaying the tympanic and mastoid segments of facial nerve and its surrounding structures. The best vision can be get on the oblique sagital plane, which formed the angle of（21.400±4.350）with the median sagittal plane .

Key words: Tympanic and mastoid segment of facial nerve, HRCT, Oblique sagittal, Section anatomy

中图分类号:

R323.1

钟斌, 李清锋, 周曼, 段菊如, 吴英宁, 黄昌盛. 面神经鼓乳段在斜矢状断面与HRCT上的定位及临床意义[J]. 中国临床解剖学杂志, 2012, 30(3): 295-298.

ZHONG Bin, LI Qing-Feng, ZHOU Man, DUAN Ju-Ru, TUN Yang-Ning, HUANG Chang-Cheng. The tympanic and mastoid segments of facial nerve: the location on the oblique sagittal section and HRCT and clinical significance[J]. Chinese Journal Of Clinical Anatomy, 2012, 30(3): 295-298.

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