CAJ | 학술논문

目的评价MR磁敏感加权成像（SWI）在脑发育性静脉异常（DVA）的应用价值。方法回顾性分析30例经磁共振诊断为脑静脉异常的患者MR表现，行常规MR扫描、增强扫描及SWI，10例加做MRA扫描。结果平扫5例DVA引流静脉呈条状稍长T1、稍长T2信号，3例呈长T1、短T2流空信号，22例显示不清，10例MRA显示引流静脉呈条状血管影，30例DVA增强扫描显示引流静脉及髓静脉强化，呈高信号“海蛇头”征，SWI也同时显示引流静脉及髓静脉，呈特征性“海蛇头”状低信号。结论常规MR序列显示DVA引流静脉不佳，增强扫描及SWI可同时显示引流静脉与髓静脉，SWI显示更佳，可作为诊断DVA的常规序列。
목적평개MR자민감가권성상（SWI）재뇌발육성정맥이상（DVA）적응용개치。방법회고성분석30례경자공진진단위뇌정맥이상적환자MR표현，행상규MR소묘、증강소묘급SWI，10례가주MRA소묘。결과평소5례DVA인류정맥정조상초장T1、초장T2신호，3례정장T1、단T2류공신호，22례현시불청，10례MRA현시인류정맥정조상혈관영，30례DVA증강소묘현시인류정맥급수정맥강화，정고신호“해사두”정，SWI야동시현시인류정맥급수정맥，정특정성“해사두”상저신호。결론상규MR서렬현시DVA인류정맥불가，증강소묘급SWI가동시현시인류정맥여수정맥，SWI현시경가，가작위진단DVA적상규서렬。
@@@@Objective To evaluate susceptibility-weighted imaging for diagnosing developmental venous anomaly(DVA). Methods The conventional MRI(30),SWI(30)and MRV(10)of 30 patients with diagnosis of DVA on MRI were retrospectively analyzed.Results On unenhanced MRI draining veins were clearly demonstrated as hypointensity on T1WI and T2WI in 3 cases, hypointensity on T1WI and hyperintensity on T2WI in 5 cases. In 22 patients the draining veins were not seen.MRV showed the draining veins in all 10 patients. On contrast-enhanced MRI,medullary and draining veins were enhanced with the characteristic hyperintense caput medusa appearance. Hypointense caput medusa pattern was visible on SWI.Conclusions The draining veins of DVA were not well shown on conventional MRI but clearly demonstrated on contrast-enhanced MRI and SWI. More medullary veins are visible on SWI,which is valuable for diagnosing DVA.