Figure 9:

Cardiac strain values across volunteers (N=30) calculated after combining cDTI and DENSE. (A) Computed Myofiber strain rate (SR_{ff_C}) and (B) circumferential strain rate (SR_{cc_C}) at endo, mid, epi layers, and across the left ventricular (LV) wall. The black dashed and dotted lines represent the median and the first and third quartile across volunteers; the red dashed line provides a −0.15 strain reference; the colored solid lines are individual medians per volunteers. (C) Transmural distribution of SR_{ff_C}, SR_{cc_C}, and of the absolute difference of SR_{ff_C} and SR_{cc_C} at mid-systole. Blue solid lines represent the transmural median per volunteer and the box plots represent the median and IQR across volunteers. Statistical differences between SR_{ff_C} and SR_{cc_C} have been assessed using a pair-wise Wilcoxon sign rank test: p-values<0.01 are represented by (**) and p-values<0.05 by (*).