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颈动脉狭窄性病变与缺血性脑卒中的发生密切相关.快速、准确地判断颈动脉狭窄的部位和狭窄的程度,直接关系到临床治疗方案的制定,关系到患者的预后和转归.大量研究表明,彩色多普勒超声可以准确评估颈动脉狭窄,是目前临床首选的无创评估手段.“,”Carotid stenosis is closely related to occurrence of ischemic stroke.It is very important to locate and grade carotid stenosis rapidly and exactly for treatment plan and prognosis.Many studies have demonstrated that the carotid stenosis can be assessed accurately by color Doppler ultrasonography,which is the preferred noninvasive means for clinic.