目的分析胶质母细胞瘤的MRI表 现，旨在提高脑胶质母细胞瘤的诊断正确 率。方法 回顾性分析2012年9月至2017年 9月于我院经手术病理证实胶质母细胞瘤 55例MRI资料。结果 在55例患者中，额叶 13例，其中单独在额叶4例，其余9例均不 同程度侵犯邻近脑叶；颞叶26例，其中单 独在颞叶11例，14例侵犯邻近侧脑室，1 例在侧脑脑室内独立成瘤灶；顶叶7例， 枕叶9例。脑胶质母细胞瘤具有较快的生 长速度，一般在发现时，瘤体均已较大， 形态以不规则为主；MRI分型可分为囊变 坏死型、出血型、多发型，其表现主要以 T1WI低信号及T2WI高信号为主，以不均匀 强化为多见，有时肿瘤内可见异常增生血 管影，周围出现II-III度水肿及较重的占 位效应。结论 MRI对胶质母细胞瘤的诊断 具有较高临床价值；胶质母细胞瘤的MRI 表现具有一定特征性，术前多能做出正确 诊断。

Objective To analyze the MRI findings of glioblastoma in order to improve the diagnostic accuracy of glioblastoma. Methods MRI data of 50 cases of glioblastoma confirmed by surgery and pathology in our hospital from September 2012 to September 2017 were retrospectively analyzed. Results Of the 55 patients, 13 were frontal lobe, 4 of which were located in the frontal lobe alone, and the other 9 had different degrees of invasion of adjacent brain parenchyma. 26 cases were located in temporal lobe, 11 in temporal lobe alone, 14 in adjacent lateral ventricles, and 1 in the lateral ventricles. There were 7 cases in the parietal lobe and 9 cases in the occipital lobe. Glioblastoma has a relatively fast growth rate, and in general, the tumors are larger and irregular in shape. MRI classification can be divided into cystic degeneration, death, hemorrhagic and multiple types. The main manifestations were T1WI low signal and T2WI high signal mainly with uneven enhancement. Sometimes there was abnormal proliferation of vascular shadow in the tumor, and II-III degree edema and heavy occupying effect appeared around the tumor. Conclusion MRI is of high clinical value in the diagnosis of glioblastoma. The MRI findings of glioblastoma have certain characteristics and can be correctly diagnosed before operation.