英语语法分析

More than half of all otogenic brain abscesses have an associated cholesteatoma.

超过一半的耳源性脑脓肿都会有并发的胆脂瘤。

Objective to discuss MRI features of intracranial otogenic complications of otitis media and improve its diagnostic accuracy.

目的探讨慢性中耳炎颅内及颅底并发症的MRI特点，以提高对该病诊断的准确性。

Objective to describe the technical detail and to evaluate the efficacy of aspiration in the treatment of otogenic brain abscess.

目的总结经乳突腔穿刺抽脓治疗耳源性脑脓肿的方法和效果。