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目的：分析先天性外耳道狭窄合并鼓室、听小骨畸形的ＣＴ表现。材料与方法：对经过电测听检查诊断为传音性耳聋者３０例４０耳进行横断及冠状位ＣＴ扫描。结果：４０耳中有３４耳呈骨性外耳道狭窄，６耳呈膜性外耳道狭窄，２６耳合并有鼓室狭窄，１９耳合并有面神经管乳突段前位，２９耳合并有听小骨畸形。结论：经高分辨率ＣＴ对颞骨进行横断及冠状位扫描综合分析后即可获得外、中、内耳的三维影像资料，为临床提供影像学依据。
OBJECTIVE: To analyze the CT findings of congenital external auditory canal stenosis with tympanic cavity and ossicular deformity. Materials and Methods: Thirty patients (40 ears) with acoustic deafness diagnosed by electrical audiometry were transected and coronal computed tomography (CT). Results: There were 34 ears in 40 ears with stenosis of external auditory canal, 6 ears with membranous external auditory canal stenosis, 26 ears with tympanic cavity stenosis, 19 ears with front anterior facial papillary dura mater and 29 ears with hearing ossicular deformity. Conclusion: The three-dimensional imaging data of the outer, middle and inner ear can be obtained by comprehensive analysis of temporal bone and coronal scan by high-resolution CT, providing imaging evidence for clinical application.