Reproducibility
The standard error values of each parameter are 3.74% (r2= 0.5605), 3.68% (r2=0.389), 4.09% (r2=0.619), 5.024% (r2=0.889) and 2.24% (r2=0.922), for S’, TAPSE, RV FAC, lateral RV free wall strain and MRI derived RVEF respectively.