心脏收缩运动不但有纵向运动，径向运动，圆周运动，还有左室的扭转运动。

Cardiac systolic includes not only longitudinal, radial, and circumferential, but also left twist.

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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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正常对照组颈动脉收缩期径向最大运动速度高于冠心病颈动脉无斑块部位的测值，差异有统计学意义（P＜0.05）；

The systolic maximum velocity of carotid with normal contract was higher significantly than that of carotid without plaque with CAD(P<0.05).

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