Do Fluid-Attenuated Inversion Recovery Vascular Hyperintensities Represent Good Collaterals before Reperfusion Therapy?
نویسندگان
چکیده
منابع مشابه
Clinical significance of fluid-attenuated inversion recovery vascular hyperintensities in transient ischemic attack.
BACKGROUND AND PURPOSE Fluid-attenuated inversion recovery vascular hyperintensity (FVH) is often identified in patients with acute ischemic stroke. The purpose of this study was to determine the clinical significance of FVH in patients with transient ischemic attack (TIA). METHODS Consecutive inpatients with TIA who underwent MRI within 24 hours of symptom onset were studied. The frequency, ...
متن کاملAngiography reveals that fluid-attenuated inversion recovery vascular hyperintensities are due to slow flow, not thrombus.
BACKGROUND AND PURPOSE Fluid-attenuated inversion recovery (FLAIR) vascular hyperintensities (FVH) are commonly encountered on MR imaging studies performed shortly after the onset of acute ischemic stroke. Prior reports have speculated regarding the pathogenesis of this finding, yet definitive correlative angiographic studies have not been performed. We studied the pathophysiologic and hemodyna...
متن کاملFluid-attenuated inversion recovery vascular hyperintensities: an important imaging marker for cerebrovascular disease.
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 rath...
متن کاملFluid-Attenuated Inversion Recovery Vascular Hyperintensities-Diffusion-Weighted Imaging Mismatch Identifies Acute Stroke Patients Most Likely to Benefit From Recanalization.
BACKGROUND AND PURPOSE Fluid-attenuated inversion recovery vascular hyperintensities (FVH) beyond the boundaries of diffusion-weighted imaging (DWI) lesion (FVH-DWI mismatch) have been proposed as an alternative to perfusion-weighted imaging (PWI)-DWI mismatch. We aimed to establish whether FVH-DWI mismatch can identify patients most likely to benefit from recanalization. METHODS FVH-DWI mism...
متن کاملDecrease of Hyperintense Vessels on Fluid-Attenuated Inversion Recovery Predicts Good Outcome in t-PA Patients.
BACKGROUND AND PURPOSE Hyperintense vessels (HV) detected on fluid-attenuated inversion recovery (FLAIR) in patients with acute ischemic stroke (AIS) indicate cerebral hypoperfusion. However, the clinical meaning of changes in HV is yet to be clarified. Here, we investigated serial changes to HV in patients with AIS who received tissue plasminogen activator (t-PA) therapy. METHODS We studied ...
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ژورنال
عنوان ژورنال: American Journal of Neuroradiology
سال: 2017
ISSN: 0195-6108,1936-959X
DOI: 10.3174/ajnr.a5431