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首页> 外文期刊>AJNR. American journal of neuroradiology >Intracranial dural arteriovenous fistula with retrograde cortical venous drainage: use of susceptibility-weighted imaging in combination with dynamic susceptibility contrast imaging.
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Intracranial dural arteriovenous fistula with retrograde cortical venous drainage: use of susceptibility-weighted imaging in combination with dynamic susceptibility contrast imaging.

机译：颅内硬脑膜动静脉瘘伴逆行皮层静脉引流：使用敏感性加权成像与动态敏感性对比成像相结合。

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BACKGROUND AND PURPOSE: SWI is a new MR imaging method that maximizes sensitivity to magnetic susceptibility effects with phase information for visualizing small cerebral veins. The purpose of this study was to report the use of SWI in combination with DSC in examining related RCVD in patients with intracranial DAVFs. MATERIALS AND METHODS: Ten patients with angiographically confirmed DAVFs with RCVD underwent conventional MR imaging, SWI, and DSC. The ability of SWI to depict dilated cerebral veins was evaluated and then compared with DSC. The hemispheres of patients with DAVFs were grouped into affected (with RCVD) or nonaffected (without RCVD) categories by angiography. Four patients had bilaterally affected hemispheres. A total of 14 affected hemispheres in patients with DAVFs with RCVD were evaluated. RESULTS: SWI showed dilated cerebral veins on the surface of the brain in all (100%) of the 14 affected hemispheres in patients with DAVFs with RCVD and deep in the brain in 9 (64%). T2-weighted imaging showed prominent flow-voids on the surface of the brain in 10 (71%) of the 14 affected hemispheres in patients with DAVFs with RCVD and deep in the brain in 5 (36%). DSC showed increased cerebral blood volume in all of the 14 affected hemispheres. The SWI findings regarding dilated veins on the surface of the brain corresponded well with the areas of increased cerebral blood volume. CONCLUSIONS: SWI in combination with DSC could be used to characterize the presence of RCVD in patients with DAVFs.
机译：背景与目的：SWI是一种新的MR成像方法，该方法利用相位信息最大化对磁化率效应的敏感性，以可视化小脑静脉。这项研究的目的是报告SWI与DSC结合用于检查颅内DAVF患者的相关RCVD。材料与方法：10例经血管造影证实为RAV的DAVF患者接受了常规MR成像，SWI和DSC。评估SWI描绘脑静脉扩张的能力，然后与DSC进行比较。 DAVF患者的半球通过血管造影分为受影响的（有RCVD）或未受影响的（无RCVD）类别。四名患者双侧患半球。评估了患有RCVD的DAVF患者中总共14个受影响的半球。结果：SWI在患有RCVD的DAVF患者中，在14个受影响的半球中，全部（100％）的大脑表面都有扩张的脑静脉，而在9例（64％）的大脑深处，大脑的静脉扩张。 T2加权成像显示，在患有RCVD的DAVF患者中，在14个受影响的半球中有10个（71％）在大脑表面有明显的气孔，而在5个患者（36％）则在大脑深处。 DSC显示在所有14个受影响的半球中脑血容量增加。关于脑表面静脉扩张的SWI发现与脑血容量增加的区域非常吻合。结论：SWI结合DSC可用于表征DAVF患者中RCVD的存在。

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