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The Acoustic nonlinearity parameter is an important parameter innonlinear acoustics.In this article,the nonlinearity parameter B/A of normaland eight kinds of pathological porcine liver tissues were measured by finiteamplitude insert-substitution method.The mixture law for nonlinearityparameter is used to analyze and predict the volume fractions of the compo-nents in a given tissue.It was found that the nonlinearity parameter is sensitiveto the pathological forms of biological tissues and the values of B/A dependon the tissue composition and structural features.
The Acoustic nonlinearity parameter is an important parameter innonlinear acoustics. In this article, the nonlinearity parameter B / A of normaland eight kinds of pathological porcine liver tissues were measured by finite amplitudempl-insert-substitution method. The mixture law for nonlinearity parameter is used to analyze and predict the volume fractions of the compo-nents in a given tissue. It was found that the nonlinearity parameter is sensitive to the pathological forms of biological tissues and the values of B / A dependon the tissue composition and structural features.