The assessment of RV function starts with the measurement of RV dimentions and the qualitative evaluation of its function.

Left: the right ventricle appears normal in size and systolic function. Notice the smaller RV surface compared to the LV (aprox. 1:2 to 1:3).

Right: massive dilated RV with severely reduced systolic function.

Left: TAPSE can be assessed with M-mode, measuring the distance of tricuspid annular movement between end-diastole to end- systole.

Right: the velocity of this move- ment can be measured with TDI.

Left: color encoded tissue Doppler imaging (TDI).

Right: Tei-index, also known as "myocardial performance index" (MPI) can be assessed with PW-Doppler in RVOT and RV inflow, and also with TDI, with the formula (a-b)/b.

Left: ventricular interdepen- dence can be clearly recognize here. The LV is impaired in its function through a significant septal indentation.

Right: eccentricity index (Lei), systolic and diastolic, is an im- portant parameter that can be determined with the formula: Lei = D1/D2. Normal value = 1.

Left: dilated RV with 3D volu- metry, here seen from the front. Red represents the apex, green the inflow and yellow the outflow track.

Right: the same RV, here seen from behind. Grey surfaces represent tricuspid and pulmonary valves.

Left: here the 2D examination of the same case, from the apical four-chamber view. Qualitative assessment show a severe impairment of RV function.

Right: here the quantitative results of 3D volumetry.

Left: the RV only mildly dilated and its function is slightly im- paired, here seen from the front.

Right: same case seen from behind.

Left: 2D examination of the same case, from the apica four-chamber view. Qualitative assessment show a mildly impaired RV function.

Right: quantitative results of 3D volumetry confirm the qualitative estimation of RV function.