摘要
目的:在HRCT扫描重建的引导下,模拟人工耳蜗植入入路主要步骤解剖,作相关的解剖和HRCT数据测量对照以便为人工耳蜗植入术前影像学评估提供指导。方法:通过6例儿童颞骨标本解剖,模拟人工耳蜗主要步骤解剖,解剖前后作HRCT横轴位和斜矢状位扫描,观察测量手术解剖和HRCT之间的关系。结果:解剖测量面神经隐窝宽度在蜗窗水平为(3.13±0.34)mm,在前庭窗水平宽度为(4.12±0.44)mm,HRCT测量面神经隐窝宽度在蜗窗水平为(3.20±0.38)mm,在前庭窗水平为(4.14±0.47)mm,斜矢状位HRCT可使面神经垂直段、水平段全程显示。解剖测量数据与HRCT测量数据差异无统计学上意义(P>0.05)。结论:横轴位面神经到外耳道后壁的距离、斜矢状位面神经到蜗窗距离是反映面神经位置关系的很重要的参数,面神经垂直段、外耳道后壁、蜗窗是测量的重要解剖标志,术前作HRCT人工耳蜗植入相关测量可用来指导临床手术。
Objective： In order to provide help for preoperative assessment of cochlear implantation,related dissection of temporal bone was conducted guided by high resolution computerized tomography（HRCT） in accordance to the main steps of cochlear implantation,and was compared to HRCT measurements on a viewing workstation.Method：Six temporal bones were dissected according to the main steps of cochlear implantation and scanned in axial and semilongitudal planes by HRCT to observe the relationship between anatomy and HRCT.Result：The width of facial recess in dissection was（3.13±0.34）mm at the level of round window,and（4.12±0.44）mm at the level of oval window,The width of facial recess in HRCT was（3.20±0.38）mm at the level of round window,and（4.14±0.47）mm at the level of oval window.The whole course of facial nerve was visualized clearly in semilongitudal plane.No statistically significant differences were found between the results of dissection and HRCT.Conclusion：The distance in axial between facial nerve and posterior wall of external auditory canal and the distance from facial nerve to round window in semilongitudal plane are the most important parameters which reflect the position of facial nerve.The vertical portion of facial nerve,posterior wall of external auditory canal,round window are important measurement landmarks.Related preoperative measurements of cochlear implantation by HRCT can help to guide clinic surgery.
出处
《临床耳鼻咽喉头颈外科杂志》
CAS
CSCD
北大核心
2011年第10期433-435,共3页
Journal of Clinical Otorhinolaryngology Head And Neck Surgery
基金
国家863计划(No:2007AA02Z445)
国家自然科学基金(No:30671150
30971589)
"十一五"国家攻关计划(No:2007BA118B13)
湖南省科技厅一般项目(湘财教指[2009]42号)
