林旭波，吴爱琴，郑文龙，杨忠福，段伟民，杨于兵，陈通敬

    (1.温州医科大学附属第二医院育英儿童医院 放射科，浙江 温州 325027；2.温州医科大学附属苍南医院 放射科，浙江 温州 325800)

    磁敏感加权成像技术对儿童脑血管畸形的诊断价值

    林旭波1，吴爱琴1，郑文龙2，杨忠福2，段伟民2，杨于兵2，陈通敬2

    (1.温州医科大学附属第二医院育英儿童医院 放射科，浙江 温州 325027；2.温州医科大学附属苍南医院 放射科，浙江 温州 325800)

    目的：探讨磁敏感加权成像技术(SWI)对儿童脑血管畸形的临床诊断价值。方法：选取2013年7月至2015年3月温州医科大学附属第二医院育英儿童医院脑血管畸形患儿38例，分别行常规MRI和SWI检查，其中动静脉畸形11例、脑静脉畸形8例、海绵状血管瘤14例(其中多发5例、单发9例)和毛细血管扩张症5例，7例同时行钆喷酸葡胺增强扫描，比较常规MRI序列与SWI序列对脑血管畸形病灶检测的差异。结果：38例脑血管畸形病灶在SWI均清晰显示。动静脉畸形、海绵状血管瘤、脑静脉畸形、毛细血管扩张症的常规MRI检出率分别为100.0%、78.6%、37.5%和20.0%，而SWI检出率均为100.0%。SWI在显示微出血、引流静脉及髓静脉方面明显优于常规MRI。结论：SWI在儿童脑血管畸形疾病中较常规MRI更多、更清晰地显示病灶情况，避免部分病灶的漏诊，在儿童脑血管畸形诊断中具有重要的临床价值。

    磁敏感加权成像；磁共振成像；脑血管畸形；儿童

    Abstract: Objective:To evaluate the diagnostic value of susceptibility weighted imaging (SWI) in cerebral vascular malformations of children.Methods:Thirty eight cases of cerebral vascular malformations of children underwent routine magnetic resonance imaging (MRI) and SWI examination, which included 11 cases of arterio-venous malformations (AVM), 8 cases of cerebral venous malformations (CVM), 14 cases of cavernous hemangiomas (9 cases of solitary and 5 cases of multiple) and 5 cases of intracerebral capillary telangiectasia (ICT). Seven cases performed routine gadopentetate dimeglumine (Gd-DTPA) enhanced MRI scan.The difference of SWI and conventional MRI sequences on detection of cerebral vascular malformations was compared.Results:Thirty eight cases of cerebral vascular malformations were well-displayed on SWI. The detection rate of conventional MRI in AVM, cavernous hemangiomas, CVM and ICT were 100.0%, 78.6%, 37.5%and 20.0% respectively. While the detection rate of SWI in them were all 100.0%. SWI was obviously superior to conventional MRI on demonstrating microbleed foci, draining veins and medullary veins of cerebral vascular malformations.Conclusion:Comparing with conventional MRI, SWI can clearly show more details and detect more small lesions of cerebral vascular malformations, and avoid the missed diagnosis. It has an important value for the diagnosis and differentiation diagnosis of cerebral vascular malformation in children. ......