RT Journal Article
SR Electronic
T1 Fluid-Attenuated Inversion Recovery Vascular Hyperintensities: An Important Imaging Marker for Cerebrovascular Disease
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 1771
OP 1775
DO 10.3174/ajnr.A2265
VO 32
IS 10
A1 A. Azizyan
A1 N. Sanossian
A1 M.A. Mogensen
A1 D.S. Liebeskind
YR 2011
UL http://www.ajnr.org/content/32/10/1771.abstract
AB SUMMARY: Vascular hyperintensities have been noted on FLAIR sequences obtained in the setting of acute stroke and intracranial steno-occlusive disease. The presence of FVHs likely represents disordered blood flow, often from collaterals distal to arterial occlusion or stenosis. As opposed to other vessel signs seen in arterial insufficiency, FVH is unique in that it does not represent thrombus, but rather sluggish or disordered blood flow through vessels. This review will discuss the diagnostic and prognostic value of FVH and its impact on clinical decision-making. DWIdiffusion-weighted imagingFLAIRfluid-attenuated inversion recoveryFVHFLAIR vascular hyperintensityGRE-BAgradient-echo susceptibility vessel blooming artifactsHMCAShyperdense MCA sign seen on CTHVShyperintense vessel signMCAmiddle cerebral arteryMRAMR angiographyMRIMR imagingNIHSSNational Institutes of Health Stroke ScalePWIperfusion-weighted imagingrtPArecombinant tissue plasminogen activatorTOFtime of flightTIAtransient ischemic attacks