摘要
目的探讨幕下占位性病变的磁共振成像(MRI)表现及特征。方法回顾性分析57例经临床和(或)手术、病理证实的幕下占位性病变,所有病例均作MRI平扫,其中47例同时作了增强扫描。结果星形细胞瘤、脑膜瘤、听神经瘤、转移瘤、髓母细胞瘤及血管母细胞瘤为幕下最常见的占位性病变,该区占位性病变大部分有好发部位和特征性的MRI表现,本组MRI定位、定性准确率为98%、84.2%。结论MRI对该区占位性病变的诊断和鉴别诊断有重要价值。
Objective To analyze magnetic resonance imaging（MRI）features of the space-occupying lesions in infratentoria.Methods 57 patients space-occupying lesions in infratentoria were proved by pathologically or clinically were studied.All of patients were performed with plain scan,and 47 cases were performed with contrast-enhanced scanning.Results Astryocytoma,meningioma,acousticneuroma,metastatic tumor,medulloblastoma,hemangioblastoma were the most frequent tumors in this area.The most of the space-occupying lesions in infra tentoria had the characteristic MRI findings.The accuracy rates of location and quaoltative dianosis in MRI before operation were 98%、84.2%.Conclusion MRI can be of great value in diagnosis and differential diagnosis of tumors in this area.
出处
《医学综述》
2010年第5期787-790,共4页
Medical Recapitulate
关键词
幕下
脑肿瘤
磁共振成像
Brainneoplasms
Magnetic resonance imaging
Tomography
