Fig. 6

Temporal correlation between ANGV signal and tissue Doppler signal. Hemodynamic signals (ECG, LV and aortic pressures, upper panel), ANGV signal (middle panel) and tissue Doppler signal (lower panel) are displayed. Five vertical lines cross the three panels. Starting from left, the first line displays the onset of the ECG. The systole is confined between the first and second lines. In the lower panel the s′ signal is observed correlating with the systolic ANGV signal (middle panel). Between the second and third lines, the early rapid filling phase of diastole is observed (LV pressure decreases, upper panel). The correlating ANGV signal is prominent (middle panel) whereas the e′ signal (tD, lower panel) peaks in the second half of this period. Between the third and fourth lines the short diastasis can be detected, where LV pressure is almost constant, ANGV is minimal, and the Doppler signal records no tissue motion. At this period, the P wave may be observed. Between the fourth and fifth lines, the ANGV signal represents a rotation motion that correlates with the a′ signal (tD, lower panel)