Methods Thirty healthy subjects were enrolled in the study. Longitudinal SR of LV walls and RV wall during systole,early diastole and atrium contraction(SRs,SRe and SRa) and largest strain(Smax) were measured.

• 方法测量30例正常中老年人各室壁、各节段收缩期、舒张早期和房缩期纵向应变率(SRs、SRe、SRa)及最大应变(Smax)。