Determination of the acoustic nonlinearity parameter in biological media using FAIS and ITD methods

Publisher Website
Google Scholar
Abstract
Two methods for determination of the acoustic nonlinearity parameterB/A in biological media are presented. One is the finite amplitude insert‐substitution method (FAIS), considering the influence of both the soundattenuation of samples and the diffraction of the transducer on the experimental measurement. The other is the improved thermodynamic method (ITD), based on the measurement of phase shifts in the acoustic wave due to the change of ambient pressure. The nonlinearity parameter B/A has been measured for various biological solutions and soft tissues using these two methods. Some results of dependence of B/A values on the concentration and temperature are also presented here.

This publication has 2 references indexed in Scilit: