Calculating intraventricular pressure difference using a multi-beat spatiotemporal reconstruction of color m-mode echocardiography.

This work aims to provide a methodology to improve the analysis of color-M-Mode (CMM) echocardiograms, as used to assess cardiac function. Specifically, we presented a methodology for the combined analysis of multiple heartbeat cycles and improve the accuracy of intraventricular pressure difference (IVPD) calculation. CMM sweep speed and heartbeat variations impact the accuracy of IVPD calculation.

Left ventricular vortex formation is unaffected by diastolic impairment.

Normal left ventricular (LV) filling occurs rapidly early in diastole caused by a progressive pressure gradient within the ventricle and with a low left atrial pressure. This normal diastolic function is altered in patients with heart failure. Such impairment of diastolic filling is manifested as an abrupt deceleration of the early filling wave velocity.