摘要
目的探讨耳颞部CT扫描对中耳病变诊断的价值.方法对65例慢性中耳炎病变的患者进行了术前CT扫描,术中发现中耳病变与CT诊断进行对照.结果表明CT扫描未见软组织影,可以基本排除胆脂瘤,对异常软组织影的诊断灵敏度为100%,其中提示胆脂瘤的可能性54.49%,其余为其他病理性组织,异常软组织影的CT值与其病变性质无相关性(P<0.05).另外,CT扫描对骨质(包括听小骨)破坏诊断的灵敏度达到84%~88%.对于较微小的骨质破坏,由于受部分容积效应的影响,难以作出准确判断.结论CT扫描可提高中耳病变的确诊率,对中耳及乳突的手术具有指导意义.
Objective To explore the value of the high resolution CT scan of the temporal bone to middle ear disease.Methods Sixty-five case of chronic otitis media between 1998 and 2002 underwent preoperative CT scaning followed by surgical operation of the middle ear and mastoid, by contrast of postoperative findings.Results The results showed the total absence of abnormal soft tissue on CT essentially excluded cholesteatoma.The diagnostic sensitivity of CT scanning to soft tissue was 100% ,in which the probability of cholesteatoma was only 54.09% .The remainder of the soft tissue consisted of a wide variety of other benign inflammatory processes .No significant correlation between CT density numbers and the variants soft tissue masses was found.In addition,The diagnostic sensitivity of bone erosion on CT was 84-88% ,but the diagnosis of slight bony erosion due to the influence of volume averaging was very difficult.Conclusion CT scan could improve the diagnostic rate of middle ear disease and also have the directing significance in operation of middle ear and mastoid.
出处
《重庆医学》
CAS
CSCD
2005年第4期569-570,共2页
Chongqing medicine
关键词
中耳炎症
CT手术
chronic otitis media
high resolution CT scan operation