Methods: Applying the color dopplerultrasoundtechnique to examine the effects of Xiaoyu tablet on treatment of carotid atherosclerosis after patients took Xiaoyu tablet for 48 weeks.
方法：采用彩色多普勒超声技术，观察口服消瘀片48周后对颈动脉粥样硬化斑块的影响。
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In the past 20 years, the imaging technique of ultrasound imaging equipment has made much progress in harmonic imaging, coherent imaging, Doppler imaging and frequency spectra analysis.
Color Doppler combining with 3d ultrasound imaging technique could display the stereoscopic configuration of "holding ball", "hand-basket", "surrounding blood vessel bypass".