吉林大学学报(医学版)

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薄层CT容积重建技术对乙状窦后入路切入点与标志点的形态学测量及其意义

刘相良1,杨帅1,何岍妍1,伊丽娜1,刘水1,王琦1,李幼琼1,赵航1,宋军学2   

  1. (1.吉林大学基础医学院人体解剖学系,吉林 长春 130021; 2.吉林大学第一医院超声诊断中心,吉林 长春 130021)
  • 收稿日期:2014-03-21 出版日期:2014-11-28 发布日期:2015-01-18
  • 通讯作者: 宋军学 E-mail:(Tel:0431-88782584, E-mail:songjunxue@126.com)
  • 作者简介:刘相良(1991-),男,吉林省长春市人,在读医学硕士,主要从事断层影像解剖学研究。
  • 基金资助:

    卫生与计划生育委员会科教司科研基金资助课题(2009-039)

Morphologic measurement of  entry points and landmarks of retrosigmoid approach using volume rendering with thin-section computed tomography and its significance

LIU Xiang-liang1,YANG Shuai1,HE Qian-yan1,YI Li-na1,LIU Shui1,WANG Qi1, LI You-qiong1,ZHAO Hang1,SONG Jun-xue2   

  1. (1.Department of Anatomy,School of Basic Medical Sciences,Jilin University,Changchun 130021,China;2.Center of Ultrasonic Diagnosis,First Hospital,Jilin University,Changchun 130021,China)
  • Received:2014-03-21 Online:2014-11-28 Published:2015-01-18

摘要:

目的:利用影像学方法测量乙状窦后入路切入点与特定标志点的距离和特定标志面夹角,为听神经瘤手术乙状窦后入路提供指导。方法:对100名志愿者的乙状窦、颈静脉孔和听耳道进行CT扫描,利用三维重建技术,以过手术入路平行于眼耳平面的平面和鼻中隔所在平面作为测量平面,分别测量横窦乙状窦转折处(A)、颈静脉孔上缘(B)、内听道下缘(C)三者之间的距离(记为AB、AC和BC)以及颈静脉孔到AC边的最短距离。测量AC和AB与矢状轴所成夹角(α和β)。结果:AC的长度为(45.20±3.97) mm,AB的长度为(44.27±4.68) mm,BC的长度为(6.18 ±2.02) mm,颈静脉孔到AC的最短距离为(5.27±2.03) mm,角α测量值为(39.07±4.86)°;角β测量值为(45.99±5.62)°。结论:得到乙状窦后入路中手术切入点与标志点的距离和夹角及手术入路距颈静脉孔的安全距离。

关键词: 乙状窦后入路, 容积重建, 颈静脉孔, 内听道

Abstract:

Abstract:Objective
To research the jugular foramen,internal auditory pore (IAP) and the turning point between its components by imageological methods and to provide theoretical basis for retrosigmoid approach in the operation of acoustic neurinoma.Methods The skulls of 100 volunteers were scanned to get the final result with thin-section  computed  tomographic  image.High-resolution spiral  CT  multiplane reformation was used to reform images that were parallel to the Frankfort horizontal plane to measure the distance between the turning point of retrosigmoid (A),the edge of jugular foramen(B) and the lower edge of the internal auditory canal(C) (denoted AC,AB,BC) and the shortest distance from the jugular foramen to AC.The angles between AC,AB and sagittal axis(α,β) were measured.Results The distance of AC was  (44.94±3.84) mm,the distance of AB was (43.68±4.56) mm.The distance of BC was (6.15 ±2.04) mm,and the shortest distance between jugular foramen and AC was  (5.21±0.23) mm.The angle α was measured as (39.50±4.74)°,and the angle β was measured as (46.35±5.51)°.Conclusion The research measure the distance and angle between entry points and landmarks of retrosigmoid approach and the safe distance.

Key words:  , retrosigmoid approach, volume rendering, jugular foramen, internal auditory canal

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