Velocity|related indices derived from MPD including peak velocity of S wave, E wave and A wave, A/E and MVG (myocardial velocity gradient) were applied for the detection of WMA. For evaluation of WMA, left ventricle was divided into 20 segments.

• 用于室壁运动分析的 MPD速度指标为 S波、E波、A波的峰速度 ,A/ E比值及跨壁速度梯度 (MVG)。