A MODIFTED MODEL OF ULTRASOUND SCATTERING FOR BIOLOGICAL TISSUES

A modified model of ultrasound scattering, based on the structure of biological tissues, has been derived which assumes that the scale of elastic modulus fluctuation of tissues is statistically distributed. The result explains the observed variation of the backscattering coefficient with frequency for a number of tissues. A crude discussion about the relationship between the statistical parameters and the tissue structure is also provided.