Color-Flow Doppler Ultrasound measures the severity of peripheral vascular disease and is used by Cardiology for dynamic evaluation of the heart, heart valves and major vessels.
彩色血流多普勒超声措施， 周围血管疾病的严重性，并用于心脏病的心脏，心脏瓣膜及大血管的动态评价。
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Section water ring: prevent concentration in the peripheral Settings, seepage, to change the direction of flow, increasing permeability diameter, reduce the seepage.
截水环：防止集中渗流，在外围设置，以改变水流方向，增加渗径，减小渗流。
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About 8 million people have blood flow problems to their legs and hips, known as peripheral artery disease, according to the American Heart Association.