Fig. 1

The motion of the right ventricular wall during the cardiac cycle in healthy volunteer and rToF patient can be decomposed in longitudinal, radial and anteroposterior axes, and the change of the volume during the cardiac cycle can be measured for each axis separately. The green mesh represents end-diastolic volume, and the blue surface is the end-systolic volume with all motion directions enabled. The orange surface represents the volume loss at end systole generated by only the longitudinal motion. The yellow surface represents the volume loss at end systole generated by only the radial motion and the grey surface—the volume loss at end systole generated by only the anteroposterior motion. One beat global (blue line) and decomposed volume-time curves of the right ventricle show that in healthy volunteers the longitudinal and radial motion contributes almost equally to global right ventricular function, while in rToF patients, the relative contribution of right ventricular longitudinal motion is impaired more than the radial or anteroposterior one. rToF – repaired tetralogy of Fallot