目的：应用超声定量组织速度显像(QTVI)技术测定二尖瓣环运动速度，评价其是否与左室整体收缩功能指标左室射血分数(L VEF)相关。
Objective: to evaluate if the mitral annular systolic motion velocities measured by Doppler quantitative tissue velocity image (QTVI) correlated with left ventricular ejection fraction (LVEF).
目的：应用定量组织速度显像(QTVI)测定二尖瓣环运动速度评价亚临床期糖尿病心肌病患者左室整体收缩和舒张功能。
Objective: to assess global left ventricular systolic and diastolic function in patients with subclinical diabetic cardiomyopathy by quantitative tissue velocity imaging (QTVI).
目的：应用定量组织速度显像(QTVI)测定二尖瓣环运动速度评价亚临床期糖尿病心肌病患者左室整体收缩和舒张功能。
Objective: to assess global left ventricular systolic and diastolic function in patients with subclinical diabetic cardiomyopathy by quantitative tissue velocity imaging (QTVI).
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