FLAIR 成像上的高信号血管征在钆增强后会减轻。
Hyperintense vessel sign on fluid-attenuated inversion recovery MR imaging is reduced by gadolinium.
机构信息
Section on Stroke Diagnostics and Therapeutics, NINDS, National Institutes of Health, Bethesda, MD 20892, USA.
出版信息
AJNR Am J Neuroradiol. 2012 Sep;33(8):E112-4. doi: 10.3174/ajnr.A2482. Epub 2012 Mar 8.
Abstract
The HVS on FLAIR imaging is a useful marker of acute ischemic stroke. We investigated whether prior administration of gadolinium-based contrast hindered detection of this sign on images from subjects with acute nonlacunar ischemic stroke <4.5 hours after onset. Both blinded and comparative unblinded analyses showed significantly reduced HVS detection on postcontrast images. We suggest that assessment for this sign should be performed on images acquired prior to contrast administration.
摘要
FLAIR 成像上的 HVS 是急性缺血性脑卒中的一个有用标志物。我们研究了在发病后<4.5 小时的急性非腔隙性缺血性脑卒中患者中，先前给予钆基对比剂是否会阻碍对该征象的检测。盲法和对比性非盲法分析均显示，对比后图像上 HVS 的检测明显减少。我们建议，应该在给予对比剂之前采集的图像上评估这个征象。
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