论文部分内容阅读
目的：探讨颞叶癫痫的ＭＲＩ 表现及其诊断价值。材料和方法：对临床诊断为颞叶癫痫４３ 例患者，行自旋回波横断面、冠状面和矢状面ＭＲＩ 研究。结果：４３ 例中，３５ 例颞叶发现有异常ＭＲ 信号，并经手术病理证实。８ 例颞叶无异常发现。术前ＭＲＩ 定位诊断正确率为１００ ％ ，定性诊断正确率为８２ ．９ ％ 。３５ 例中，９ 例胶质细胞增生，Ｔ１ ＷＩ上无明显信号异常，Ｔ２ 加权图像上呈无占位效应的高信号；１５ 例胶质瘤， 表现为病灶呈长Ｔ１ 长Ｔ２ 信号， 并伴有不同程度的占位效应，灶周水肿不明显；７ 例胆脂瘤，表现为Ｔ１ ＷＩ 上呈高于脑脊液的低信号，Ｔ２ ＷＩ 上均呈高于脑脊液的高信号；４ 例海绵状血管瘤，Ｔ１ ＷＩ 上呈等高混合信号，Ｔ２ ＷＩ 上呈明显高信号，周边有低信号环与脑实质相隔。结论：ＭＲＩ 对确定颞叶癫痫病灶的部位和病因具有重要价值。
Objective: To investigate the MRI findings of temporal lobe epilepsy and its diagnostic value. MATERIALS AND METHODS: MRI was performed on 43 patients with temporal lobe epilepsy diagnosed by spin echo, coronary angiography and sagittal MRI. Results: Of the 43 cases, abnormal MR signals were found in 35 cases of temporal lobe and confirmed by surgery and pathology. No abnormal temporal lobe was found in 8 cases. The accuracy of preoperative MRI localization was 100%, and the correct rate of qualitative diagnosis was 82. 9%. Among the 35 cases, glial cells proliferated in 9 cases, no obvious signal abnormalities on T1WI, high signal on T2-weighted images without mass effect, and 15 gliomas showed long T1 long T2 signals There were different degrees of space-occupying effect, and there was no obvious edema in the perifocal area. Seven cases of cholesteatoma showed low signal intensity higher than cerebrospinal fluid on T1WI and higher signal intensity than cerebrospinal fluid on T2WI. Four cavernous vessels Tumor, T1 WI was mixed signal was high, T2 WI was significantly higher signal, around the low signal loop and brain parenchyma. Conclusion: MRI is of great value in determining the location and etiology of temporal lobe epilepsy.