单发脑转移瘤的MR影像诊断  

MR Imaging Diagnosis of Single Brain Metastasis

作　　者：方松华[1,2,3] 李蓉芬[1,2,3] 许存森 黄荫德[1,2,3] 

机构地区：[1]浙江医科大学附属邵逸夫医院放射科 [2]浙江医科大学附属二院放射科 [3]长兴县人民医院放射科

出　　处：《实用放射学杂志》1996年第12期727-729,共3页Journal of Practical Radiology

摘　　要：作者分析了３４例单发脑转移瘤的ＭＲ表现。Ｔ１加权像，肿瘤实体以等信号居多；Ｔ２加权像以等、低信号为主。结节状病灶可见“小结节大水肿”征象。肿瘤中央坏死，液化者，中间呈极高信号，周边绕以等、低信号环。MRI findings of 34 cases with single brain metastasis were analyzed. It was found that the tumor entities were isointensity on short TR sequences and iso-or mildly hypointensity on long TR sequences commonly. All solid nodules showed significant edema as 'small nodule and big edema' sign. The necroses and cystic degeneration commonly exist in brain metastases, which had long T2 signal intensity but the tumor had iso-or hypointensity circle.

关 键 词：脑肿瘤 脑转移瘤 磁共振成像 

分 类 号：R739.410.4[医药卫生—肿瘤]