超声斑点追踪技术不受心脏整体运动影响且无角度依赖性，是评价心肌扭转运动的新的量化指标。
Speckle tracking imaging may represent a new, powerful method for quantifying ventricular torsion and be in- dependent of global cardiac function and angle dependency.
目的探讨超声二维斑点追踪显像(2d -STI)技术评价冠心病患者左心房功能的临床应用价值。
Objective To observe the clinical value of evaluation on the function of the left atrial with two-dimensional speckle tracking imaging (2d-sti) in patients with coronary artery diseases (CAD).
目的：探讨斑点追踪显像(STI)技术评价原发性高血压(EH)患者早期左心室舒张及收缩功能改变的价值。
Objective: to observe the value of speckle tracking imaging (STI) in assessing early changes in left ventricular diastolic and systolic function in patients with essential hypertension (EH).
目的：运用二维超声斑点追踪技术评价经皮房间隔封堵术前后患者右心室运动速度、应变及应变率的急性期变化。
Objective:To investigate the changes of right ventricular velocities, strain and strain rate in patients with atrial septal defect(ASD)after transcatheter closure.
研究星团的天文学家已经注意到质量一定的行星(通过追踪表面阴暗冷却斑点来测量)，其旋转速度随着其星龄呈现可预测性的变化。
Astronomers who study star clusters have noticed that the speed at which a star of a given mass spins (measured by tracking cool, dark spots on the surface) also seems to vary predictably with age.
研究星团的天文学家已经注意到质量一定的行星(通过追踪表面阴暗冷却斑点来测量)，其旋转速度随着其星龄呈现可预测性的变化。
Astronomers who study star clusters have noticed that the speed at which a star of a given mass spins (measured by tracking cool, dark spots on the surface) also seems to vary predictably with age.
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