Cerebral Venous ThrombosisBarbara Simons, Geert Lycklama a Nijeholt and Robin Smithuis Radiology department of the Medical Centre Haaglanden in the Hague and the Rijnland hospital in Leiderdorp, the Netherlands脑静脉性栓塞形成•Introduction •When to think of venous thrombosis •Dense clot sign •Empty delta sign •Absence of normal flow void on MR •Venous infarction •Imaging in suspected thrombosis •CT-venography •MR-venography •DSA •Pitfalls in CT •Arachnoid Granulations •Mimick of dense clot sign •Pseudo empty delta sign •Wrong bolus timing •Pitfalls in MRI •Hypoplastic transverse sinus •Low signal intensity in thrombus •Flow void on contrast-enhanced MR •Chronic dural sinus thrombosis and related syndromes •DAVF •Thrombosis and increased CSF pressure •Venous territories Publicationdate October 21, 2010 Cerebral venous thrombosis is an important cause of stroke especially in children and young adults.It is more common than previously thought and frequently missed on initial imaging.It is a difficult diagnosis because of its nonspecific clinical presentation and subtle imaging findings.In this article we will focus on:• Findings on routine imaging that should make you think of unsuspected venous thrombosis.• How to image patients in suspected venous thrombosis.• Pitfalls.此时应想到静脉栓塞可能•致密斑块征•空三角征•MR 上正常流空征消失•静脉性脑梗塞疑似此病的成像方法•CT 静脉成像•MR 静脉成像•DSACT 陷阱•蛛网膜颗粒•酷似致密凝块征•假性空三角征•错误的团注时间MRI 陷阱•横窦发育不良•血栓内低信号强度•MR 对比增强时的流空硬膜窦栓塞临床与相关综合征•DAWF （硬膜动静脉瘘）•栓塞和脑脊液压力增高静脉分布图静脉性脑梗塞是中风的重要原因，尤其是在儿童或年轻人。它比以前更常见而且常常在最初的成像中漏诊由于临床上缺少特征而且影像所见微妙，因而诊断困难这里主要讨论的内容：* ...
