Susceptibility Vessel Sign for the Detection of Hyperacute MCA Occlusion: Evaluation with Susceptibility-weighted MR Imaging
Susceptibility Vessel Sign for the Detection of Hyperacute MCA Occlusion: Evaluation with Susceptibility-weighted MR Imaging
复制标题
用于检测超急性 MCA 闭塞的磁敏血管征：磁敏加权 MR 成像评估
DOI：
10.13104/imri.2016.20.2.105
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
M. Park
中科院分区：
文献类型：
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作者：
Sangmin Lee;S. Cho;D. Choi;S. Park;Hwa Seon Shin;H. Baek;H. Choi;J. Kim;Hye Young Choi;M. Park
MCA闭塞。材料与方法：69例急性脑卒中患者（男37例，女32例，46 ~ 89岁[平均69.1岁]）在症状出现后6小时内行mri检查。MR检查包括T2、FLAIR（液体衰减反转恢复）、DWI、SWI、PWI（灌注加权成像）、MR血管造影（MRA）和增强T1。其中28例患者在MR检查后2小时内行数字减影血管造影（DSA）。在不了解临床、DSA和其他MR成像结果的情况下，评估SWI上是否存在SVS。结果：在MRA或DSA上，34例（49.3%）患者出现MCA闭塞。在这些患者中，有30例（88.2%）在SWI中检测到SVS。SWI的敏感性为88.2%，特异性为97.1%，阳性预测值为96.8%，阴性预测值为89.5%，诊断准确率为92.8%。结论：SWI检测超急性中动脉闭塞具有敏感性、特异性和准确性。
MCA occlusion. Materials and Methods: Sixty-nine patients (37 males, 32 females; 46-89 years old [mean, 69.1]) with acute stroke involving the MCA territory underwent MR imaging within 6 hours after the symptom onset. MR examination included T2, FLAIR (fluid-attenuated inversion recovery), DWI, SWI, PWI (perfusion-weighted imaging), contrast-enhanced MR angiography (MRA) and contrast-enhanced T1. Of these patients, 28 patients also underwent digital subtraction angiography (DSA) within 2 hours after MR examination. Presence or absence of SVS on SWI was assessed without knowledge of clinical, DSA and other MR imaging findings. Results: On MRA or DSA, 34 patients (49.3%) showed MCA occlusion. Of these patients, SVS was detected in 30 (88.2%) on SWI. The sensitivity, specificity, positive predictive value, negative predictive value and diagnostic accuracy of SWI were 88.2%, 97.1%, 96.8%, 89.5% and 92.8%, respectively. Conclusion: SWI was sensitive, specific and accurate for the detection of hyperacute MCA occlusion.
磁敏感加权成像 (SWI) 的方向依赖性
DOI：
--
发表时间：
2008
期刊：
影响因子：
--
作者：
桜井康雄、長縄慎二、石橋一郎、榊原勝治、河村美奈子、川井恒;米田和夫
通讯作者：
米田和夫