| 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 |
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| 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: |
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| 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. |
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