Physical modeling of low-frequency sound propagation through human thoracic tissue

This work aims at modeling, in the presence of simplifying physical and geometrical assumptions, acoustic wave propagation through human thoracic tissue. Presented here are preliminary modeling results that are indicative of dominant lung resonances at specific frequencies. These resonant modes strongly impact pressure distribution in the tissue as well as the pressure and acceleration at the tissue-air interface. Under the modeling conditions, the effect of these lung resonant modes outweighs that of bones on acoustic waves at these frequencies.