摘要
目的 :探讨MRI对脑转移瘤的诊断价值。材料和方法 :49例脑转移瘤患者 ,男 31例 ,女 18例 ,年龄 33～ 72岁 ,平均 5 0 .4岁 ,所有病例均行颅脑MRI平扫及增强检查。结果 :MRI显示脑转移瘤主要为外源性 ,占 91.8% ;多发性较常见 ,占 5 7.1% ;转移部位多为脑实质 ( 87.8% ) ,其次为颅骨 ( 6 .1% )、软脑膜 ( 4 .1% )、幕下 ( 2 .0 % )转移 ;大多数转移瘤的MRI表现为类圆形长T1 长T2 信号肿块 ,实性部分多数均匀增强。结论 :脑转移瘤的MRI表现具有一定特征 ,结合病史 。
Purpose:To evaluate the value of MRI in the diagnosis of brain metastases. Materials and Methods: Pre-and post-enhanced MRI scan were both performed on 49 patients with brain metastases(31 males and 18 females, aging from 33 to 72 years, with mean age 50.4). Results:MRI demonstrated that cerebral metastases were mainly from extracerebral organs(91.8%); multifocal metastasis occurred more frequently(57.1%);the cerebral parenchyma was the most common site of cerebral metastasis(87.8%),the following was the skull(6.1%)?the cerebral piamater(4.1%)and the inferior tentorium(2.0%); the most of them demonstrated round mass, hypointense signals on T 1 weighted image and hyperintense signals on T 2 weighted image, the solid portion of the usually enhanced homogeneously. Conclusion:Most cases of brain metastases can be diagnosed correctly according to the MRI charateristic findings combined with history.
出处
《中国医学影像学杂志》
CSCD
2001年第5期338-340,共3页
Chinese Journal of Medical Imaging
