慢性中耳炎是耳颞部常见的疾病 ,可造成耳部流脓、疼痛及听力下降 ,少数可引起颅内并发症 ,早期诊断对治疗和预防并发症有重要意义。而颞骨的结构微细复杂 ,传统X线放射检查难以显示清晰 ,诊断率低。高分辨率计算机体层摄影(HRCT)空间分辨率高 ,不仅可以显示小至镫骨的微细结构 Chronic otitis media is a common ear and ear disease, can cause ear pus, pain and hearing loss, a few can cause intracranial complications, early diagnosis of the treatment and prevention of complications of great significance. The structure of the temporal bone is complex and complicated, and the traditional X-ray examination is difficult to show clearly and the diagnosis rate is low. High-resolution computed tomography (HRCT) has high spatial resolution and can display not only fine structures as small as stapes