The mean Vs (MVs) and mean Ve/Va(MVe/Va) of the mitral annulus were compared with LVEF and E/A ratio respectively.

• 用二尖瓣环水平各节段心肌在收缩期峰值速度的平均值（MVs）与LVEF、平均Ve/Va（MVe/Va）与E/A分别作直线相关分析。