螺旋CT高分辨扫描及多平面重建对胆脂瘤型慢性化脓性中耳炎的诊断价值

目的:评价螺旋CT高分辨扫描及多平面重建对胆脂瘤型慢性化脓性中耳炎的诊断及手术治疗的指导作用。方法:回顾性分析经手术病理证实的胆脂瘤型慢性中耳乳突炎的CT横断面及多平面重建表现。结果:胆脂瘤型慢性化脓性中耳炎CT表现为鼓室内软组织密度影,听骨链破坏移位,上鼓室、鼓窦扩大,鼓室外侧壁、鼓室内侧壁、下壁破坏,鼓室天盖、外侧半规管、面神经管、乙状窦破坏,位于外道的可见外耳道骨质破坏,同时骨质破坏腔的边缘常出现硬化环等与术中所见一致。结论:高分辨CT及多层面重建可以较清楚的显示中耳结构、病变范围,对胆脂瘤型慢性化脓性中耳炎的诊断及手术治疗的指导有重要作用。

The value of spiral HRCT and multi-plane reconstruct (MPR) in diagnosing and clinical application of chronic otitis media ear diseases (cholesteatoma)

Objective To evaluate spiral HRCT and multi-plane reconstruct(MPR) in diagnosing and clinical application of chronic otitis media ear diseases(cholesteatoma) Method Review the findings of spiral HRCT and multi-plane reconstruct(MPR) of chronic otitis media ear diseases(cholesteatoma) with surgical findings was made. Results the representation of chronic otitis media ear diseases(cholesteatoma) is parenchyma shade in tympanic sinus ,mastoid antrum destruction and replacement of auditory ossicles ,bone destruction of out-side wall ,inside wall ,down-side wall of media ear cavity,facial canal semicircular canal, sigmoid sinus,jugular fossa, external auditory meatus , and osteosclerosis around. All findings accord with the presentation of surgical findings. Conclusion spiral HRCT and multi-plane reconstruct(MPR) play an important role in displaying the structure of media ear, range of pathological change , diagnosing and clinical application of chronic otitis media ear diseases(cholesteatoma).