摘要
目的评价MRI对儿童脑静脉窦血栓(CVST)的临床诊断价值。方法回顾性分析15例(男11例,女4例,年龄10天～11岁,平均3.9岁)经临床确诊为CVST患儿的MRI及MRV表现。对所有病例均行MRI及MRV平扫,其中1例行增强MRI(CE-MRI)和增强MRV(CE-MRV)扫描。结果 14例横窦受累,12例上矢状窦受累,11例乙状窦受累,1例蝶顶窦受累。MR平扫6例表现为T1WI等高信号、T2WI高信号;3例表现为T1WI等高信号、T2WI低信号;3例表现为T1WI、T2WI等信号;1例T1WI高信号、T2WI等信号;2例T1WI和T2WI血栓显示不明显。增强扫描表现为脑静脉异常强化,静脉窦壁表现为环形、三角形或平行状强化,而静脉窦内血栓无强化,呈不规则充盈缺损或空三角征。MRV表现为受累静脉窦显影不规则、狭窄或中断、侧支血管形成,邻近深静脉及浅静脉迂曲扩张。结论 MRI结合MRV,特别是增强MRI和MRV是诊断儿童CVST的有效手段,对于临床及时诊断治疗及随访具有重要价值。
Objective To evaluate the clinical value of MRI in children with cerebral venous sinus thrombosis（CVST）.Methods MRI findings of 15 children（11 male,4 female;age ranged from 10 days to 11 years;with mean of 3.9 years） with clinically diagnosed CVST were analyzed retrospectively.All the cases were performed with plain MRI and MRV.Only 1 patient underwent contrast enhanced MRI and contrast enhanced MRV.Results The thrombosis of transverse sinus was observed in 14 children,superior sagittal sinus in 12 cases,sigmoid sinus in 11 cases and sphenoparietal sinus involvement in 1 cases.CVST was manifested as iso-hyperintensity signal on T1WI and hyperintensity signal on T2Wl in 6 cases,iso-hyperintensity signal on T1WI and hypointensity signal on T2WI in 3 cases,isointensity both on T1WI and T2WI in 3 cases and hyperintensity signal on T1WI and isointensity on T2WI in 1 case,no obvious abnormal signal on T1WI and T2WI in 2 cases.Abnormal venous enhancement was found on contrast enhanced MRI in 1 cases.Contrast enhanced MRI showed ring like,triangle and parallel enhancement in wall of venous sinus,but venous sinus thrombosis did not enhanced with irregular filling defect or empty triangle.MRV showed the venous sinus as irregular,narrow,and discontinuous with collateral circulation formation,and many circuitous superficial cortical veins and the deep veins were seen near the involved venous sinus.Conclusion MRI combined with MRV,especially CE MRI and CE MRV are effective and noninvasive methods in the diagnosis of cerebral venous sinus thrombosis,which have important value in diagnosis,treatment and follow up for pediatric CVST.
出处
《临床放射学杂志》
CSCD
北大核心
2012年第11期1613-1617,共5页
Journal of Clinical Radiology
基金
首都卫生发展科研专项(青年项目)(项目编号:首发2011-2009-03)
科技重大专项项目(课题)(编号:2011ZX09302-007-01)
关键词
脑静脉窦血栓
磁共振成像
磁共振静脉成像
儿童
Cerebral venous sinus thrombosis Magnetic resonance imaging Magnetic resonance venography Children
