HRCT在先天性外耳、中耳、内耳畸形上的应用

Application of HRCCT to Congenital Malformations of the External, Middle and Inner Ear

目的 分析先天性外耳、中耳、内耳畸形在HRCT(高分辨CT)上的特点。方法 观察 2 8例 ( 32耳 )外耳道畸形在HRCT上的种类及其合并中耳、内耳畸形的情况。结果 外耳道畸形的 32耳分别表现为外耳道闭锁 (部分为软组织闭锁 )与外耳道狭窄 ,可合并有听小骨畸形、鼓室畸形及Mondini内耳畸形。结论 HRCT可获得外、中、内耳畸形的可靠影像学资料 ,为临床治疗方法的选择及其预后的评判提供可靠依据。

Objective To analyze the CT characteristics of congenital malformation of external,middle and inner ear.Methods The categories of 28 cases (32 ears) external malformation combined with middle and inner ear malformations were observed with HRCT.Results The external ear malformation included the external atresia (part of soft tissue atresia),external stenosis and could combined with malformation of auditory ossicles,tympanic cavity and mondini′s inner ear.Conclusion The reliable image data of congenital malformation of external,middle and inner ear could be obtained from HRCT.HRCT might supply the effective basis for selection of clinical therapy methods and assessment of prognosis.