颅内外血管狭窄是缺血性卒中的高危因素,血管狭窄引起的卒中的主要机制包括急性血栓形成导致血管闭塞或穿支动脉的闭塞、动脉-动脉栓塞、低灌注或是上述各种因素之间的协同作用。在中国随着人口的老龄化以及近年来血管超声的广泛应用,发现颈动脉狭窄的发生率呈上升趋势,并有学者认为颈动脉狭窄者其颈部动脉斑块的形成与破裂才是缺血性脑卒中的真正原因,其中狭窄管腔中的粥样斑块脱落形成 Intracranial vascular stenosis is a risk factor for ischemic stroke. The main mechanisms of stroke caused by vascular stenosis include acute thrombosis leading to occlusion of vascular or perforator arteries, arterial-arterial embolism, hypoperfusion or between various factors Synergy. In China, with the population aging and the extensive application of vascular ultrasound in recent years, the incidence of carotid artery stenosis has been on the rise. Some scholars think that the formation and rupture of the carotid artery plaque in ischemic stroke are ischemic The real cause of stroke, in which the atherosclerotic plaque in the narrow lumen is shed