未见斑块回声
No plaque echo was observed
以上为机器翻译结果，长、整句建议使用 人工翻译 。
MES阳性率与狭窄程度、斑块超声回声、狭窄处收缩期血流速度及卒中危险因素未见关联。
No correlation was found between MES with degree of stenosis, and ultrasonic characteristics of plaques, and PSV (peak systolic velocity), and stroke risk factors.
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