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Published on: June 2, 2015
Hyperintense vessel sign on fluid-attenuated inversion recovery MR imaging is reduced by gadolinium
K A Dani1, L L Latour, S Warach
1Section on Stroke Diagnostics and Therapeutics, NINDS, National Institutes of Health, Bethesda, MD 20892, USA.
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.
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