Figure 3

Bland-Altman plots demonstrating the systematic differences in measured systemic right ventricular volumes and function between Method A and Method B. Bland-Altman plots demonstrate on the X-axis the mean value of Method A and Method B for each parameter (a. mean end diastolic volume; b. mean end systolic volume; c. mean stroke volume; d. mean ejection fraction), and on the Y-axis the difference between the two analysis methods for the same parameter. The solid line represents the mean value of the difference for each method, the dotted lines represent ± 2 SD. RVEDV = right ventricular end diastolic volume; RVEF = right ventricular ejection fraction; RVESV = right ventricular end systolic volume; ml = millilitre; SD = standard deviation; RVSV = right ventricular stroke volume. The 'A' or 'B' behind parameters indicate that values were obtained using Method A or Method B respectively.