Figure 1.
Example of the left and right end-systolic frame and the corresponding time-volume curve.
Two short axis images of the end-systolic frame of the LV (A) and RV (B), and the corresponding time-volume curve (C) in a patient with ToF and a complete RBBB. Timing of the RV end-systolic frame is 106 ms (3 frames) delayed compared to LV end-systolic frame. Measuring the RV end-systolic volume in the LV instead of the RV end-systolic frame results in a difference of 9 ml/m2. This is visible in the short-axis image of the RV end-systolic frame (B) in which the larger blue contour corresponds to the RV contour of the LV end-systolic frame (A) and the yellow contour to the RV contour of the RV end-systolic frame. Timing of the end-diastolic frame is the same for the RV and LV. LV = left ventricle, Max. = maximum volume, Min. = minimal volume, RBBB = right bundle branch block, RV = right ventricle.
Table 1.
End-systolic and end-diastolic frame selection of the right ventricle compared to the left ventricle.
Figure 2.
Change in right ventricular volumes and function.
Scatterplots of the change in RV end-systolic volume (A), end-diastolic volume (B) and ejection fraction (C) when using the end-systolic and end-diastolic frame of the RV instead of the LV. EDV = end-diastolic volume, EF = ejection fraction, ESV = end-systolic volume, LV = left ventricular, RBBB = right bundle branch block, RV = right ventricular, ToF = tetralogy of Fallot.
Table 2.
Right ventricular volumes measured in the end-systolic and end-diastolic frame of the left and right ventricle.