Abstract: Objective To assess the diagnostic value of susceptibility weighted imaging (SWI) for cerebral venous malformation. Methods The SWI features of 23 patients with cerebral venous malformation were analyzed retrospectively. The SWI images were compared with conventional MRI and cerebral angiography. Results All the patients performed conventional sequences, contrast enhanced MRI scanning, SWI sequences and digital substraction angiography (DSA) examination. Solitary lesion were revealed in 20 out of 23 cases, which included 4 cases accompanied with cavernoma, while 3 cases had multiple lesions. The lesions presented spotty or patchy low intense image on T1WI, and streak or short streak low intense image on T2WI. On contrast enhanced scanning, all lesions presented marked radial enhancement. At the venous phase of DSA, dilated pulp veins and gross draining vein were seen in all the patients. Dilated pulp veins and gross draining vein were shown more completely, extensively and clearly by SWI than those on MRI and cerebral angiography. Conclusion SWI is of high value for detecting and characterizing cerebral venous malformation. It is a rapid, noninvasive and reliable approach to diagnose cerebral venous malformation and can be adopted to replace DSA in screening and preoperative assessment for this disease.

Key words: Cerebral nervous system malformation, Cerebral veins, Magnetic resonance imaging, Cerebral angiography

摘要： 目的   探讨磁敏感加权成像（SWI）对脑静脉性血管畸形的临床诊断价值。方法   回顾分析23 例脑静脉性血管畸形患者SWI 特点，并与常规MRI 和全脑血管造影检查结果进行对比分析。结果   常规MRI 扫描显示，23 例患者中20 例呈单发病灶，4 例伴海绵状血管瘤；3 例为多发病灶。T1WI 呈点状或片状稍低信号改变，T2WI 呈短条形或条形低信号改变；增强扫描呈明显放射状线样强化改变。全脑血管造影检查于静脉期显示扩张的髓静脉及引流静脉。SWI 可见扩张的髓静脉和粗大的引流静脉，与MRI和全脑血管造影检查相比，其病灶显示范围更全面、广泛，且图像更加清晰。结论   SWI诊断脑静脉性血管畸形快捷、无创，可替代全脑血管造影作为脑静脉性血管畸形的筛查及手术前评价方法

关键词: 中枢神经系统血管畸形, 脑静脉, 磁共振成像, 脑血管造影术