摘要
目的探讨CT在慢性中耳乳突炎分型诊断中的价值。方法对35例42耳慢性中耳乳突炎行高分辨CT(HighResolutionCTHRCT)检查,分析影像表现特征。结果脂瘤型中耳乳突炎鼓窦、鼓室区可见块状软组织肿块影。鼓室壁破坏出现率为92%,骨质破坏多累及邻近组织。听小骨消失、病损、硬化出现率为94%。肉芽肿型中耳乳突炎鼓室壁破坏出现率为15%。听骨链破坏出现率为23%。肉芽肿型中耳乳突炎多出现听骨链肉芽包裹。单纯性中耳乳突炎鼓室壁及听骨链周围骨质破坏少见,无软组织肿块。结论HRCT检查的影像特征对慢性中耳乳突炎具有良好的定位、定量、和定性作用。
Objective To explore the value of HRCT in the diagnosis of chronic otitis and mastoiditis. Method Thirty -five patients with chronic otitis and mastoiditis received high resolution CT scan （HRCT）. Results （1）In cases of cholesteatoma, the mass was seen in tympanic sinus and the tympanum area; where the positive rate of drum damage was 92% and most of the damage of substantia ossea involved the ~idjacent tissue. The positive rate of the disappearance, damage and cirrhosis of otosteon was 94% in patients with granuloma- type mastoiditis. The damage of eardrum wall was revealed in 15% cases of granuloma - type, in which ossicular chain was revealed wrapped with granulation tissue. The damage of ossicular chain was 23% in cases of granuloma - type. In cases of simple type, the damage of eardrum wall and the substantia ossea adjacent the ossicular chain was rare, and there was no mass. Conclusions The HRCT is useful in the diagnosis of chronic mastoiditis.
出处
《影像诊断与介入放射学》
2005年第4期216-218,共3页
Diagnostic Imaging & Interventional Radiology
关键词
慢性中耳炎
胆脂瘤
高分辨CT
听小骨
Chronic otitis media
Chelesteatoma
Ligh- reslution CT auditory ossicle
