脑发育性静脉异常MRI条带征探讨  

Discussing MRI stripe sign of brain developmental venous anomaly

作　　者：杨敏[1] 邹同恩[1] 施崇敏[1] 余江[1] 聂悦[1] 

机构地区：[1]四川省泸州市人民医院放射科,泸州646000

出　　处：《磁共振成像》2015年第10期768-772,共5页Chinese Journal of Magnetic Resonance Imaging

摘　　要：目的探讨脑发育性静脉异常(developmental venous anomaly,DVA)条带征的形成原因及诊断价值。材料与方法回顾性分析我院8例经磁共振成像(magnetic resonance imaging,MRI)增强扫描证实的DVA患者的临床及影像资料。结果 8例DVA患者中,3例位于小脑半球,3例位于侧脑室体旁,1例位于额叶,1例位于小脑半球及四脑室内且合并小脑半球海绵状血管瘤;8例T1WI均呈低信号,增强扫描呈不同程度强化,4例可见海蛇头征;5例T2WI呈三组黑白相间条带征,1例呈圆点状高信号,2例呈单组黑白条带征;4例FLAIR序列呈三组黑白相间条带征。结论 DVA条带征形成的原因为流动相位偏移伪影及血管搏动伪影,对DVA的诊断有重要提示意义。Objective： To discuss the stripe sign of developmental venous anomaly and the cause of formation and diagnostic value. Materials and Methods： The clinical and imaging data of 8 cases of DVA confirmed by contrast MRI were retrospectively analyzed. Results： In 8 cases, 3 cases were located at cerebellar hemisphere, 3 cases located beside the body of the lateral ventricle, 1 case located at the frontal lobe, 1 case located at the cerebellar hemisphere and the forth ventricle accompanying with cavernous hemangioma of cerebellum; All of 8 cases show low signal in T1 WI and different high signal in the enhancement scanning, 4 cases show sea snake caput sign; In T2 WI 5 cases show three groups of black and white stripes, 1 case shows round dot high signal, 2 cases show a single group of black and white stripe; In FLAIR 4 cases show three groups of black and white stripes. Conclusion： The cause of the formation of DVA stripe sign are flow phase shift artifact and vascular pulsing artifact, and the stripe sign has important significance in the diagnosis of DVA.

关 键 词：脑 发育性静脉异常 条带征 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R743.4[医药卫生—诊断学]