目的 回顾性分析四脑室区肿瘤 MR表现,旨在提高对四脑室区肿瘤定位及 诊断水平。方法 回顾性分析26例经手 术病理证实的四脑室区肿瘤MR资料。结 果 MR可多方位显示病灶位置、内部信号 及强化特点，本组病例影像诊断符合率 92.3%。结论 磁共振是四脑室区肿瘤首选 检查技术，能为临床术前评估和术后疗效 评价提供较为精准影像信息。

Objective To study the MR features of tumours of the four ventricle region, in order to improve the positioning and diagnosis level of tumours of the four ventricle region. Methods The MR images of 26cases of tumor in four ventricle region confirmed by pathology and the operation were analyzed retrospectively. Results MRI can display the location of the focus in many directions, the internal signal and the strengthening characteristics. The diagnostic coincidence rate is 92.3%. Conclusion MR is the preferred examination technology evaluating tumours of the four ventricle region, which can provide the more accurate image information for clinical preoperative evaluation and evaluation of curative effect.