脑膜瘤的MRI诊断  

MRI Diagnosis of Meningioma

作　　者：王国良[1] 詹松华[1] 龚承友 

机构地区：[1]上海铁道大学医学院附属甘泉医院放射科,上海200065

出　　处：《上海铁道大学学报》2000年第1期45-47,共3页

摘　　要：目的　探讨脑膜瘤的 MRI信号特征及瘤体、瘤周附属征像的诊断意义。方法　分析资料完整并经病理证实的 116例脑膜瘤的检查结果 ,以脑灰质信号为基础信号 ,对照观察其信号特征。结果　脑膜瘤大多 T1 WI为等低信号 ,质子加权为高信号 ,T2 WI信号相对变低。包膜、钙化、血管流空效应等对脑膜瘤的定性诊断有价值。Objective To evaluate the diagnostic significance of MRI signal characteristics, tumor features and surrounding changes.Methods The results of MRI examination of 116 cases with pathologically confirmed meningioma were analysed.The signal appearance of the tumor was evaluted on the basis of signal intensity(SI) of the brain cortex.Results MRI signal features of meningioma included low SI on T 1W images,high SI on hydrogen weighted images and relative low SI on T 2W images.Calcifications,capiscale,and flow voiding made significant contributions to the qualitative diagnosis of meningioma.Conclusion MRI has high susceptibility and characteristic appearances in diagnosing meningioma.

关 键 词：脑膜瘤 NMR 成像 

分 类 号：R739.450.4[医药卫生—肿瘤] R730.44[医药卫生—临床医学]