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编者按脑微出血(cerebral microbleed,CMB)是脑小血管病的一种,指T*2梯度回波序列(T2 star gradient-recalled echo,GRE T*2)和磁敏感加权(susceptibilityweighted imaging,SWI)序列影像上的小圆形或椭圆形低信号病变。病理和影像对照研究证实其病理改变为陈旧出血和含铁血黄素沉积,小动脉的脂质玻璃样变和淀粉样血管病是导致CMB的主要血管病变基础。CMB的出现及数量与潜在的小血管病严重程度有关,反映在影像上即与腔隙性脑梗死的数
Editor’s note Cerebral microbleed (CMB) is a form of cerebrovascular disease that refers to the T2 star gradient-recalled echo (GRE T * 2) and susceptibility weighted imaging (SWI) Small circular or oval low signal lesions on sequence images. Pathological and imaging studies confirmed that the pathological changes of old bleeding and hemosiderin deposition, arteriolar lipid glass-like changes and amyloid angiopathy is the leading cause of CMB’s major vascular lesions. The presence and amount of CMB is associated with the severity of underlying small vessel disease and is reflected in the number of images that are associated with lacunar infarcts