| Abstrakt: |
The statistics of ultrasound echo envelope signals can be used to characterize scattering media. The Rayleigh distribution and its generalized forms, the Kand Rice distributions, have been previously used to model the echo signal. A more generalized statistical model, the homodyned Kdistribution, combines the Kand Rice distribution features to better account for the statistics of the echo signal. We show that this model can give two parameters that are useful for media characterization: k, the ratio of coherent to diffuse signals, and, β, which characterizes the clustering of scatterers in the medium. |
