Abstract: 【Abstract】 Objective To investigate the diagnostic value of MRI approaches in development venous anomaly.(DVA).Methods Sixteen patients with 17 DVA were included in this study and analyzed retrospectively. All cases underwent T1WI, T2WI, T2FLAIR, DWI plain and T1WI enhanced MRI scan,.and part of them underwent SWI and MRV scan. Results Among 17 DVA,.12 were located in supratentorial region and 5 in infratentorial region..Draining veins all showed flow void signal in T1WI,T2WI,T2FLAIR. Six cases of 16 cases were complicated with spongy angioma. Medullary veins showed strip or luffa cystic long T1, long T2 singal, low T2FLAIR signal. Draining and medullary veins all showed motting or strip low singal in DWI and SWI. Enhanced T1WI showed medullary veins drained into draining veins in spoke-wheel or arborization pattern. MRV showed intuitively the draining veins and the blood directions which presented like brain angiography,.but not as good as enhanced scan for medullary veins. Conclusion Combined with T1WI enhance and MRV,.MRI routine scan may confirm developmental venous anomaly and replace brian angiography.

Key words: Brain, Developmental venous anomaly (DVA), MRI, Vascular malformation

摘要： 【摘要】 目的 探讨磁共振成像各种方法对脑发育性静脉异常的诊断价值。方法 回顾性分析本院16例17处脑发育性静脉异常(DVA)经MRI诊断为脑静脉畸形病例,所有患者均进行过磁共振常规T1WI、T2WI、T2FLAIR、DWI和T1WI增强扫描,其中部分病例做过SWI、MRV扫描。结果 DVA位于幕上区有12个,幕下区5个;引流静脉在T1WI、T2WI、T2FLAIR均表现流空低信号,髓静脉大部分为细条状或丝瓜囊状长T1、长T2信号、T2FLAIR低信号;DWI、SWI引流静脉及髓静脉区域均为斑点状或细条状低信号;TIWI增强扫描:所有病例均见髓静脉呈轮辐状或树枝状汇入引流静脉;MRV直观而形象地显示引流静脉及其引流方向,类似于脑血管造影表现,但对髓静脉的显示不及增强扫描。16例患者中6例合并海绵状血管瘤。结论 MRI常规扫描结合T1WI增强扫描及MRV可明确诊断脑DVA及其并发症,可替代脑血管造影检查。

关键词: 颅脑, 发育性静脉异常(DVA), 磁共振成像, 血管畸