脑微出血 PPT

u K,et al.Clinical and radiologic differences between primary intracerebral hemorrhage with and without microbleeds on gradient-echo ic resonance images,Arch Neurol,2004,61(6):905-910.Р高血压РMBs为慢性高血压患者脑内靶器官损伤的一种类型*。?慢性高血压造成脑内小动脉玻璃样变,易发生血管破裂导致MBs。Р脑微出血的病因及危险因素Р*Lee SH,Park M,Kwon SJ,et al.Left ventricular hypertrophy is associated with cerebral microbleeds in hypertensive patients.Neurology,2004,63(1):16-21.Р脑白质病变Р影像学上称白质疏松*1?常与MBs共存,严重程度与MBs关系密切,但并不是MBs的独立危险因素*2Р脑微出血的病因及危险因素Р*1脑白质疏松为一个影像学概念,其在头颅CT上表现为两侧大脑皮质下、侧脑室周围、半卵圆中心区斑片状或弥散状相互融合的低密度灶,在脑MRI的T1加权像上显示等信号或低信号,在T2加权像、FLAIR上为高信号。病变部位与形态与脑CT相似。?*2Kim DE,Bae HJ,Lee SH,et al.Gradient echo ic resonance imaging in the prediction of hemorrhagic ischemic stroke:a need for the consideration of the extent of leukoariosis.Arch Neurol,2002,59(3):425-429.