生物组织散射元平均间距估计的一种新方法

A NEW METHOD FOR ESTIMATING MEAN SCATTERER SPACING OF BIOLOGICAL TISSUES

生物组织散射元平均间距是描述生物组织微观结构特性和生物组织超声散射特性的重要参数。本文在对生物组织超声背向散射随机建模的基础上，提出了基于生物组织超声背向散射信号突变点检测的散射元平均间距估计的新方法。实验结果表明，这种新方法不仅能估计出散射元平均间距，还能估计出散射元的空间分布与概率分布。该方法是生物组织超声散射分析的有效方法。

Mean scatterer spacing(MSS) is an important parameter for describing the biological tissue microstructure and its ultrasonic scattering characteristics. A new MSS estimation method using transients points or characteristic points detection of backscattered ultrasonic signals is proposed based on the stochastic modeling of the tissues ultrasonic backscatterinng. The experimental results show that this new method can be used to estimate the MSS, and the spatial distribution as well as probability distribution of tissue scatterers.This method is an effective one for analysis of biological tissue ultrasonic scattering.