Figure 4.

(a,b) Typical images of radial strain curves from one cardiac cycle in the four groups. The green, pink, pale blue, mazarine, yellow and purple lines represent the radial strain curves of segment 1–6, respectively (corresponding to the six myocardial segments in figure 1c), and the black line refers to the averaged strain curve of the other three curves, where the arrows point to the peak value; the x-axis in (a) and (b) are time. (c,d) Post-operative changes of peak radial strains in the free wall; and (e,f) post-operative changes of peak radial strains in the interventricular septum. Data are mean ± s.e.m. *p < 0.05, YM versus YS. ^#p < 0.05, AM versus AS. Symbol keys of each group are listed in figure 1 legend.