CT辅助下人工耳蜗植入患儿面神经隐窝发育研究

The Development of Facial Recess in Cochlear Implant Recipients through Measuring the Width of Facial Recess Guided by CT

目的了解人工耳蜗植入患儿面神经隐窝的发育情况.方法对217例人工耳蜗植入患儿分别术前CT测量,术中实际测量面神经隐窝宽度.结果 CT测量面神经隐窝宽度在圆窗龛水平为(3.90±0.17)mm,手术中实际测量值为(3.87±0.16)mm.CT测量值与术中测量数据之间差异无统计学意义(P>0.05);人工耳蜗植入患儿各年龄阶段面神经隐窝宽度数据之间差异无统计学意义(P>0.05).结论术前通过CT可以对面神经隐窝宽度进行准确评估,有利于术中面神经隐窝开放及减少面神经垂直段损伤.各年龄阶段人工耳蜗植入患儿面神经隐窝宽度之间差异无统计学意义,提示面神经隐窝于出生后已基本无变化.

Objective To investigate the development of facial recess in cochlear implant recipients through measuring the width of facial recess. Method The facial recess was measured by preoperative CT and intraoperative measurement i n 217 cases of cochlear implants. Results The width of facial recess was 3.90 ±0.17 mm by preoperative CT and 3.87±0.16 mm in operation through the round window. There was no significant difference of the width between the preoperative CT and intraoperative measurement（P〉0.05）. There was no significant difference between the widths of the data in all groups of cochlear implant children（P〉0.05）. Conclusion Preoperative CT may accurately assess the width of facial recess,and has the benefit of appearing the facial recess and avoiding injury of facial nerve. There is no significant difference between the widths of the data in all groups of cochlear implant children, suggesting that the size of facial recess has no change after birth.