耳蜗神经管扩大合并蜗轴阙如的CT表现  

CT appearances of enlarged cochlear nerve canal with absent modiolus

作　　者：张劲松[1] 杨勇[1] 魏梦绮[1] 彭勇[1] 徐俊卿[1] 宦怡[1] 

机构地区：[1]第四军医大学西京医院放射科,陕西西安710032

出　　处：《实用放射学杂志》2011年第9期1337-1340,共4页Journal of Practical Radiology

摘　　要：目的 研究耳蜗神经管（CNC）扩大合并蜗轴阙如的CT表现及相关临床意义.方法 回顾性分析6例聋哑儿童伴耳蜗神经管扩大和蜗轴阙如的高分辨CT表现并测量相应耳蜗神经管宽度,同时与颞骨CT表现＂正常＂的聋哑儿童组、儿童中耳炎组及成人正常内耳对照组（每组分别为30例）的耳蜗神经管宽度进行比较,并通过SPSS10.0统计软件进行分析.结果 6例耳蜗神经管扩大组CNC宽度在2.5～3.3 mm之间,平均（2.944±0.268） mm,同时伴有明显耳蜗蜗轴的发育缺失;而其他对照组颞骨CT测量CNC宽度无明显统计学差异,对照组合计CNC宽度平均值为（2.044±0.207） mm.前者与对照组测量值间有明显统计学差异.结论 CNC扩大合并蜗轴阙如是先天性耳蜗发育畸形的一种表现,会引起感音性神经性耳聋,CT可以帮助明确诊断.Objective To describe the CT features of the enlarged bony canal of the cochlear nerve （ECNC） and absent modiolus in patients with congenital sensorineural hearing loss （SNHL）. Methods The width of cochlear nerve canal （CNC） was measured in 6 cases of ECNC on CT images and the results were compared with that in three other control groups （ each group composed 30 pa- tients） including children with SNHL group, children with otitis or mastoiditis group and adults with sudden deafness or tinnitus group with SPSS 10.0 . Results The width of CNC ranged from 2.5 mm to 3.3 mm , mean diameter was （ 2. 944±0. 268 ） rnm in ECNC , and accompanied with the absence of modiolus . The width of CNC in other control groups showed was about （ 2. 044±0. 207） mm . The width of the bony canal was of significant difference between ECNC group and control group （P〈0.05 ）. Conclusion ECNC with absent modiolus in the patients with SNHL may be indicative of a previously unrecognized embryologic malformation of modilus,CT can help in diagnosis of it.

关 键 词：耳 耳蜗神经管 蜗轴 体层摄影术 X线计算机 

分 类 号：R764.35[医药卫生—耳鼻咽喉科] R814.42[医药卫生—临床医学]