Figure 9
Pathline visualization of blood flow during one cardiac cycle in the left ventricle (LV) of a healthy, 61 year old male at peak early LV filling (A), diastasis (B), peak atrial contraction (C), and peak systole (D). The pathlines are color coded to distinguish 4 different compartmental behaviors through the cardiac cycle: Direct Flow (green) enters the LV during diastole and leaves the LV during systole in the analyzed heart beat, Retained Inflow (yellow) enters the LV during diastole but does not leave during systole in the analyzed heart beat, Delayed Ejection Flow (blue) starts and resides inside the LV during diastole and leaves during systole, Residual Volume (red) resides in the LV through more than two cardiac cycles. See also additional file 6.