FLAIR血管高信号与脑梗死相关性研究进展

Research progress of correlation between FLAIR vascular hyperintensity and ischemic stroke

磁共振成像是诊断急性脑梗死的重要工具,各种影像征象的研究具有重要的临床意义。液体衰减反转恢复序列血管高信号(FLAIR vascular hyperintensity,FVH)是一种在急性脑梗死患者中发现的与局部血流动力学紊乱相关的脑血管征象,此时血管在FLAIR序列上的流空效应消失,表现为高信号。近年对FVH与脑梗死的相关性研究已成为热点,作者对FVH病理生理机制、评分方法及临床意义等方面进行综述。

Magnetic resonance imaging is an important tool for the diagnosis of acute ischemic stroke,and the study of various imaging signs has important clinical significance.Fluid attenuated inversion recovery sequence vascular hyperintensity(FVH)frequently encountered in acute ischemic stroke,are known to be associated with local hemodynamic disorders,which shows the loss of flow void effect on the FLAIR sequence,presenting high signal.In recent years,researches on the correlation between FVH and cerebral infarction have become hot topics.This paper reviewed the pathophysiological mechanism,scoring methods and clinical significance of FVH.