Figure 4
Wave intensity pattern and net wave intensity comparison between patients and volunteers. Pattern of separated and net wave intensity (dI) of one volunteer (A), highlighting a typical pattern with: dominant forward compression wave in early systole (FCW), followed by a backward compression wave (BCW) and a forward expansion wave (FEW) in late systole. Comparison with a net dI pattern of a patient with coronary heart disease (B) shows a clear difference in FCW and FEW peaks magnitude.