Fig. 2From: Impact of pulmonary valve replacement on left and right ventricular function using strain analysis, in children with repaired tetralogy of FallotAccuracy of RV FAC by echocardiography based on CMR as gold standard. Bland–Altman plot for comparison of RVEF by echocardiography (RV FAC) and Cardiac MRI; mean difference between RVEF derived by echo and MRI = 0.0237, SD = 0.021, P = 0.000Back to article page