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).

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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.

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