摘要
目的 通过成本结果分析,从卫生经济学的角度探讨乳突许/梅氏位照片与颞骨高分辨薄层CT(HRCT)扫描在胆脂瘤型中耳炎诊断中的价值。方法 前瞻性纳入2000年1月至2001年1月因胆脂瘤型中耳炎在我科住院的符合纳入排除标准的30例患者,采用其乳突照片和颞骨HRCT扫描进行盲法自身对照研究,以手术发现作为判断影像学结果准确性的标准。并从成本结果测量和成本-效果分析的角度对两者进行评价,结果 颞骨HRCT扫描对胆脂瘤型中耳炎的漏诊率以著低于乳突许/梅氏位照片(P<0.05),更能提供耳部重要结构如听骨链,面神经,鼓室窦等的详细资料,为在彻底消除病灶的基础上一期重建听力提供保障。从成本结果分析及成本-效果分析来看,颞骨HRCT扫描显著优于乳突许/梅氏位照片。结论 在有条件的医院,颞骨HRCT扫描应取代乳突许/梅氏位照片,作为慢性化脓性中耳炎的常规影像学检查手段。
Objective To evaluate the diagnosis value of temporal bone high-resolution computed tomography (HRCT) in cholesteatoma. Methods There were 30 cases that had received the mastoid surgery because of cholesteatoma. Each patient's mastoid plain films(Schuller' s and Mayer' s ) and HRCT had been taken and compared with each other and surgical findings and evaluated with health economic evaluation methods.Results The sensitivity rate in diagnosing cholesteatoma with HRCT was much higher than that with mastoid film( P <0.005) . The more important benefit with HRCT was that it can afford the detail information in ear such as the ossicular chain, facial nerve canal, tympanic sinus, etc. which were basis for otologist in surgery to remove the focus thoroughly and reconstruct the middle ear function at the same time. In the view of health economic evaluation, HRCT is Iso much better than mastoid X-ray film.Conclusion HRCT should replace masloid Schuller's and Mayer's film in diagnosis cholesteatoma and HRCT should use as ordinary examination in chronic otitis media.
