目的：探讨颈动脉粥样硬化斑块与脑梗死的关系，了解颈动脉多普勒超声在脑梗死危险预测中的作用。
AIM: To investigate the relationship between carotid atherosclerosis plaque and cerebral infarction and study the effect of carotid Doppler ultrasonography on risk assessment of cerebral infarction.
目的探讨老年人颈动脉结构的彩色多普勒超声改变并评价其临床价值。
Objective To evaluate the clinical value of color Doppler ultrasound in the detection of the changes in the structure of carotid in elderly people.
目的：探讨利用三维彩色多普勒超声成像评价颈动脉狭窄程度的准确性。
AIM: To explore the accuracy of three dimensional color Doppler ultrasonography in evaluating the extent of carotid artery stenosis.
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