周剑,高培毅.颅内室管膜下瘤的MR影像学诊断[J].中国医学影像技术,2003,19(11):1447~1449
颅内室管膜下瘤的MR影像学诊断
MRI Diagnosis of Intracranial Subependymomas
  
DOI:
中文关键词:  室管膜下瘤  磁共振成像
英文关键词:Subependymomas  Magnetic resonance imaging
基金项目:
作者单位
周剑 首都医科大学附属天坛医院神经影像中心,北京 100050 
高培毅 首都医科大学附属天坛医院神经影像中心,北京 100050 
摘要点击次数: 5164
全文下载次数: 15447
中文摘要:
      目的 探讨颅内室管膜下瘤MR影像学特征。方法 回顾性分析12例经病理学证实的颅内室管膜下瘤MRI表现。结果 室管膜下瘤特征性表现为:①肿瘤主要位于幕上侧脑室和透明隔;② 肿瘤有光滑清楚的边界;③ MR T1WI示肿瘤呈等、低信号,信号强度稍高于脑脊液,其内可见小囊状更低信号区;T2WI示肿瘤呈高信号;④MR增强扫描,肿瘤多数无强化征象。结论 颅内室管膜下瘤有较为特征性的MRI表现,充分认识这些MR影像特征有助于室管膜下瘤的术前诊断和术后评价。
英文摘要:
      Objective To study the MR imaging features of intracranial subependymomas.Methods MR findings of 12 cases with pathologically proved intracranial subependymomas were retrospectively analyzed.Results MR appearances of subependymomas were as follows:①Subependymomas were mostly situated in the lateral ventricle and septum pellucidum.②Tumors had smooth margins and were well demarcated from surrounding tissue.③The signal of the lesions were iso- or hypointense,but slightly higher than that of CSF on T1-weighted images,and hyperintense on T2-weighted images,with microcystic structures.④No contrast enhancement were found in most tumors.Conclusion The MR appearances of intracranial subependymomas possess unique features,which are very helpful in pre-operative diagnosis of subependymomas and in tumor evaluation after operation.
查看全文  查看/发表评论  下载PDF阅读器