Ultrasound echo envelope analysis using a homodyned K distribution signal model.
The statistics of ultrasound echo envelope signals can be used to characterize scattering media. The Rayleigh distribution and its generalized forms, the K and Rice distributions, have been previously used to model the echo signal. A more generalized statistical model, the homodyned K distribution, combines the K and 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, beta, which characterizes the clustering of scatters in the medium.
Dutt
V
V
Department of Physiology and Biophysics, Mayo Graduate School, Rochester, MN 55905, USA.
Greenleaf
J F
JF
D003198:Computer Simulation; D008961:Models, Structural; D008962:Models, Theoretical; D014465:Ultrasonics; D014463:Ultrasonography