磁敏感加权成像在脑静脉血管瘤诊断中的应用  

The Application of Susceptibility Weighted Imaging in Diagnosis of Cerebral Venous Angiomas

作　　者：龚毅[1,2] 肖香佐[1] 段文峰[1] 刘润[1] 王界斌[1] 宋洁[1] 

机构地区：[1]南昌大学第一附属医院放射科,江西南昌330006 [2]南昌市第一医院CT/MR室

出　　处：《实用放射学杂志》2010年第9期1243-1246,共4页Journal of Practical Radiology

摘　　要：目的 分析脑静脉血管瘤的磁敏感加权成像（SWI）表现,探讨SWI在脑静脉血管瘤诊断中的应用价值.方法 对10例经影像诊断为脑静脉血管瘤患者的SWI及MRI图像进行分析.结果 10例病例单发者8例,多发者2例,均合并眼眶占位.8例单发者病变位于幕上者7例,幕下者1例 2例多发者幕上、幕下均见病灶分布.10例中有5例MR平扫时可以发现粗大引流静脉,但髓静脉显示不清 另外5例MR平扫显示不清或者仅为不均匀信号不易发现.4例行增强扫描者异常静脉均明显强化呈典型的＂水母头＂样改变.所有SWI检查均清楚地显示细小髓静脉及粗大引流静脉,表现为典型的＂水母头＂状或树枝样低信号,而且对于合并的出血以及海绵状血管瘤等亦能很好地显示.结论 SWI能清楚显示髓静脉及引流静脉,可以用于脑静脉血管瘤的诊断及随访.Objective To analyze the findings of susceptibility weighted imaging（SWI） of cerebral venous angiomas and to study the diagnostic value of SWI in evaluation of cerebral venous angiomas. Methods MR imaging and SWI findings of cerebral venous angiomas in 10 cases were analysed. Results The lesions were single in 8 cases and multiple in 2 which in company with orbital angiomas. The single lesions mostly localized at upper tentorium（7/8 cases ） ,and multiple lesions were seen at both upper and down tentorium. On MR images,the enlarged draining veins were showed but the medullary veins were not in 5 cases, while the lesions in other 5 cases were not clearly showed or only showed as uneven signal intensity. 4 cases underwent enhanced scanning and the abnor mal veins were obvious enhanced like＂caput medusae＂. SWI clearly showed the tiny medullary veins and enlarged draining veins and enlarged draining veins as typical＂caput medusae＂or branch--like low signal intensity, hemorrhage and carvernous angioma itself were also well showed by SWL Conclusion SW] can showed medullary veins and enlarged draining vein well, so it can be used in diagnosis and the following-tip of patients with cerebral venous angiomas.

关 键 词：磁共振成像 磁敏感成像 脑 静脉血管瘤 

分 类 号：R739.41[医药卫生—肿瘤] R445.2[医药卫生—临床医学]