Statistics of the radio-frequency signal based on K distribution with application to echocardiography

被引:23
|
作者
Bernard, Olivier [1 ]
D'hooge, Jan [1 ]
Friboulet, Denis [1 ]
机构
[1] INSA, CREATIS, UMR 5515, CNRS,INSERM,U 630, F-69621 Villeurbanne, France
关键词
D O I
10.1109/TUFFC.2006.1678198
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
We study in this paper the statistics of the radio frequency (RF) signal in the case of partially developed speckle. Using the K distribution framework, we give the probability density function of the associated distribution, the corresponding moments, and estimators for the parameters of the distribution. The consistency of the proposed estimators is evaluated in terms of their bias and variance through numerical simulations. The ability of the proposed distribution to model RF echographic signals from cardiac tissues is evaluated from data acquired in vivo.
引用
收藏
页码:1689 / 1694
页数:6
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