摘要
目的探讨增强磁敏感成像(contrast-enhanced susceptibility-weighted imaging,CE-SWI)在颅内常见肿瘤中的应用价值。资料与方法14例颅内常见肿瘤中,脑膜瘤6例,高级别胶质瘤4例,脑转移瘤3例,髓母细胞瘤1例),分析其CE-SWI特点。结果CE-SWI示所有肿瘤边界清楚,瘤内分布静脉血管。4例高级别胶质瘤、3例脑膜瘤(矢状窦旁2例,直窦旁1例)及3例转移瘤显示瘤周水肿,与液体衰减反转恢复序列(FLAIR)一致。3例高级别胶质瘤瘤内见出血灶。4例高级别胶质瘤、2例脑膜瘤、3例转移瘤及1例髓母细胞瘤明显强化,与常规增强T1WI一致。4例脑膜瘤明显环形强化,常规增强T1WI均匀明显强化。6例脑膜瘤与1例脑膜转移瘤均显示"脑膜尾征"。结论CE-SWI具有磁敏感效应、对比增强以及FLAIR等多重效应,有助于颅内常见肿瘤的术前诊断,减少扫描序列。
Objective To investigate the diagnostic value of enhanced susceptibility-weighted imaging（CE-SWI） in intracranial common tumors. Materials and Methods The imaging features of CE-SWI in 14 intracranial common tumors were analyzed retrospectively,including 6 meningiomas,4 high grade cerebral gliomas,3 metastatic tumors and 1 medulloblastoma. Results The boundary of all the intracranial tumors was definite and many venous vessels were distributed in the tumors on CE-SWI. The edema surrounding tumors were correspond with FLAIR sequence in 4 high grade cerebral gliomas,3 meningiomas （2 near to longitudinal sinus and 1 near to straight sinus）and 3 metastatic tumors. The hemorrhagic focus appeared in 3 high grade cerebral gliomas. Obvious enhancement were correspond with routine T1WI contrast enhance- ment in 4 high grade gliomas, 2 meningiomas, 3 metastatic tumors and 1 medulloblastoma. Marked circular enhancement was seen on CE-SWI and marked homogeneous enhancement on routine T, WI contrast enhancement in 4 meningiomas. The dural tail signal was appeared in all the meningiomas and 1 metastatic tumor of meninges. Conehlsion CE-SWI have multiple effects such as susceptibility, contrast-enhanced and FLAIR sequence, it can help to diagnose the intraeranial common tumors before operation and can reduce the time of examination.
出处
《临床放射学杂志》
CSCD
北大核心
2009年第12期1692-1694,共3页
Journal of Clinical Radiology
关键词
头颅
肿瘤
磁共振成像
磁敏感成像
Cranium Tumor Magnetic resonance imaging Susceptibility weighted imaging
