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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。
This paper presents a new method for the analysis of ultrasonic scattering signal “WD cepstrum” method, and the use of this method and wavelet transform of human normal renal and renal tumor ultrasound echo signals were analyzed, the soft tissue scattering The results show that the average distance between two kinds of renal tissue scatters is obviously different. The wavelet transform and its “WD cepstrum” can well reflect the microstructural features of soft tissue. The preliminary results show that the two methods are However, “WD cepstrum” improves the resolution of average pitch estimation by wavelet transform.