内耳道薄层CT形态学参数测量  

Measurement of morphological parameters of internal acousticmeatus using thin-section CT

作　　者：刘建铭[1] 朱冬冬[1] 金光华[1] 朱学伟[1] 李琳[1] 刘岗威 程凯亮[2] 李幼琼[3] 

机构地区：[1]吉林大学中日联谊医院耳鼻咽喉头颈外科,长春130021 [2]吉林大学基础医学院解剖教研室,长春130021 [3]吉林大学中日联谊医院放射线科,长春130021

出　　处：《中华耳鼻咽喉头颈外科杂志》2017年第9期698-701,共4页Chinese Journal of Otorhinolaryngology Head and Neck Surgery

摘　　要：目的采用颞骨薄层CT测量内耳道及其周边毗邻结构的形态学参数。方法从吉林大学中日联谊医院影像数据库中筛选出50例（男性25例，女性25例，共100侧）无颞骨岩部及内耳可见病变的成年国人CT影像，在规定平面上分段测量内耳道各部分的形态学参数并利用SPSS22．0软件进行统计分析。结果内耳道整体呈向外下倾斜长约10mm、上下径及前后径约5mm的短圆柱形。内耳道深度（9．30±1．60）mm；内耳道上下径：内耳门处（4．40±0．86）mm，内、中1／3交界处（4．13±0．83）mm，中、外1／3交界处（4．61±1．02）mm；内耳道前后径：内耳门处（6．93±1．85）mm，内、中1／3交界处（6．624-1．92）mm，中、外1／3交界处（6．28±1．65）mm；横嵴深度（上壁）（3．10±0．75）mm，横嵴深度（下壁）（1．46±0．59）mm，横嵴顶点至上壁距离（2．05±0．42）mm，横嵴顶点至下壁距离（2．93±0．41）mm；内耳道上壁骨壁厚度：内、中1／3交界处（4．45±1．34）mm，中、外1／3交界处（4．32±1．12）mill，横嵴顶点处（4．37±1．28）mill；内耳道上壁骨壁出现气房的概率为32％。结论术前颞骨薄层CT可以获得内耳道形态学参数，确定内耳道的基本形态，可为术中避免损伤内耳道区域重要结构提供参考。Objective This study aimed to measure the morphological parameters of the internal acoustic meatus（IAM） and its adjacent structures using temporal-bone thin-section CT（computed tomography）.Methods CT images were obtained from 50 Chinese adult patients （25 males and 25 females,100 sides） which had no visible lesion in the petrous part of the temporal bone and inner ear,the morphological parameters of all inner ear parts were sectionally measured on the specified plane using SPSS 22.0 software for statistical analysis.Results The integral morphological characteristics of the IAM were observed.These results revealed that anterior-posterior diameter of the internal acoustic poer（IAP）（CD） was （6.93±1.85）mm,the superior-inferior diameter of the IAP（EF） was （4.40±0.86）mm,the length of the IAM（AB） was （9.30±1.60）mm,the superior-inferior diameter of the IAM（the intersection of inner 1/3 section and middle 1/3 section） was （4.13±0.83）mm,the superior-inferior diameter of the IAM（the intersection of middle 1/3 section and outer 1/3 section） was （4.61±1.02）mm,the anterior-posterior diameter of the IAM（the intersection of inner 1/3 section and middle 1/3 section） was （6.62±1.92）mm,the anterior-posterior diameter of the IAM（the intersection of middle 1/3 section and outer 1/3 section） was （6.28±1.65）mm,the depth of transverse crest （superior wall） was （3.10±0.75）mm,the depth of transverse crest （interior wall）the was （1.46±0.59）mm,the distance from transverse crest vertex A to the superior wall of the IAM was （2.05±0.42）mm,the distance from transverse crest vertex A to the interior wall of the IAM was （2.93±0.41）mm,the thickness of the superior bone wall of the IAM （the intersection of inner 1/3 section and middle 1/3 section） was （4.45±1.34）mm,the thickness of the superior bone wall of the IAM （the intersection of middle 1/3 section and outer 1/3 section） was （4.32±1.12）mm,the thickness of the superior b

关 键 词：内耳道 颞骨岩部 体层摄影术 X线计算机 

分 类 号：R764[医药卫生—耳鼻咽喉科]