Fig. 2

Image acquisition. A: apical long axis view with the position of the Doppler and echoPIV interrogation points; B: PW Doppler of the inflow in a heart failure patient. Early diastolic flow (E wave) was measured in this study, the post-atrial contraction flow (A wave) was not considered; C: left ventricle outflow tract (LVOT) PW Doppler flow in the same heart failure patient, demonstrating low output (low velocity); D: echoPIV tracking of the early diastolic inflow in the same patient; E: mid-diastolic vortex formation in the LV. Two main diastolic vortices (1,2) can be seen; F: low velocity outflow, confirmed by the PW Doppler (C)