用12个区域来测量收缩期圆周应变时间和应变率，并用应不峰值时间和应不率的标准差来表示心肌不同步。
Time to peak systolic circumferential strain and strain rate were measured in 12 segments, and myocardial dyssynchrony was expressed as the SD of time to peak strain and strain rate.
随着心肌缺血的改善，局部和整体左室收缩功能逐渐恢复，表现为圆周应变、径向应变及扭转角度的增高。
Then radial strain, circumferential strain and rotation increased. Regional systolic function damaged because of myocardial ischemia in patients with acute myocardial infarction.
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