颅外动脉硬化是脑血管病特别是缺血性脑血管病的重要危险因素 ,约 68%缺血性脑血管病伴有不同程度颈动脉硬化 ,其中斑块的性质与脑梗死的发生密切相关。作者使用超声方法对颈动粥样硬化块形成组和对非颈动脉粥样硬化组进行双侧颈动脉检查 ,以探讨颈动脉粥样硬化斑块性质与脑梗 Extracranial arteriosclerosis is an important risk factor for cerebrovascular diseases, especially ischemic cerebrovascular disease. About 68% of ischemic cerebrovascular diseases are associated with varying degrees of carotid atherosclerosis. The nature of the plaques is closely related to the occurrence of cerebral infarction . The authors used ultrasound to detect carotid atherosclerosis and non-carotid atherosclerosis bilateral carotid arteries to explore the nature of carotid atherosclerosis and cerebral infarction