RT Journal Article
SR Electronic
T1 Hyperintense Vessel Sign on Fluid-Attenuated Inversion Recovery MR Imaging Is Reduced by Gadolinium
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
DO 10.3174/ajnr.A2482
A1 K.A. Dani
A1 L.L. Latour
A1 S. Warach
YR 2012
UL http://www.ajnr.org/content/early/2012/08/01/ajnr.A2482.abstract
AB SUMMARY: 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. Abbreviations BAblinded analysisCAcomparative analysisFLAIRfluid-attenuated inversion recoveryHVShyperintense vessel signNIHNational Institutes of HealthNINDSNational Institute of Neurological Disorders and Stroke