基于“WD倒谱”法分析人体脾组织的超声散射微结构特征

本文提出了一种对超声散射信号分析的新方法———“WD倒谱”法 ,并利用该方法对人体正常脾和脾增生组织的回波信号进行了分析 ,对软组织中散射子的平均间距进行了估计 ,结果表明 :两种脾组织散射子的平均间距明显不同 ;“WD倒谱”能有效的反映软组织的微观结构特征 ,说明“WD倒谱”是软组织超声散射信号分析与软组织散射子平均间距定征的一种有效方法。

基于子波变换及其“WD倒谱”法的肾组织超声散射微结构特征分析

本文提出了一种对超声散射信号分析的新方法“WD倒谱”法 ,并分别利用该方法和子波变换法对人体正常肾和肾肿瘤组织的超声回波信号进行了分析 ,对软组织中散射子的平均间距进行了估计 ,结果表明 :两种肾组织散射子的平均间距明显不同 ;子波变换及其“WD倒谱”能很好地反映软组织的微观结构特征 ,初步说明两种方法是软组织回波信号分析与软组织散射子平均间距定征的有效方法 ,但“WD倒谱”提高了子波变换对平均间距估计的分辨率。

采用WD倒谱法分析人体肾组织的超声散射微结构特征

提出了一种对超声散射信号分析的新方法———WD倒谱法 .利用该方法对人体正常肾和肾肿瘤组织的回波信号进行分析 ,与用AR倒谱法所得结果进行了比较 .结果表明 ,两种肾组织散射子的平均间距明显不同 ,WD倒谱比AR倒谱更能反映软组织的微观结构特征 。

AN ANALYSIS OF THE MICROSTRUCTURE CHARACTERISTICS IN HUMAN KIDNEY WITH ULTRASONIC BACKSCATTERING

Objective To investigate the microstructure characteristics in human kidney with the WD cepstrum of ultrasonic backscattering. Methods By using this method, an analysis of the backscattering signals of normal and pathological human kidney in vitro was made and the mean spacing of the scatterers of biological soft tissues was estimated, then compared the means of this new approach with the means of the AR cepstrum. Results The results show that the mean spacings of the scatterers of the two different kidney tissues are noticeably different, which reveals the fact that the WD cepstrum works more effective than the AR cepstrum in showing the features of the microstructure of soft tissues. Conclusion The WD cepstrum is an effective mean to analyze the ultrasonic scattering signals and determine the features of the mean spacing of the scatterers of soft tissues. This method provides more available clinical diagnosis and improves the results of mean spacing of the scatterers of soft tissues.