基于混沌理论的心音信号非线性动力学分析

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (15) : 55-59.

论文

基于混沌理论的心音信号非线性动力学分析

丁晓蓉1，郭兴明1，钟丽莎1

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Nonlinear Dynamic Analysis of the Heart Sound Based on Chaos Theory

DING Xiao-rong1, GUO Xing-ming1, ZHONG Li-sha1

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摘要

摘要：为了从非线性动力学的角度对心音进行分析，提出了一种基于混沌理论的心音信号的分析方法。首先，计算心音信号的关联维数及最大Lyapunov指数，获取了心音信号递归图和递归定量分析参数；然后，通过13例健康人和13例二尖瓣狭窄病人的心音对其进行分析验证。结果表明：正常及二尖瓣狭窄心音信号的混沌特征具有显著性差异，该方法为实现二尖瓣狭窄的早期辅助诊断提供了依据。

Abstract

Abstract：In order to get more valuable information from the perspective of nonlinear, a method based on chaos theory was proposed to analyze the heart sound. The correlation dimension and largest lyapunov exponent were calculated, besides, the recurrence plot and its quantification analysis parameters were obtained. And they were used to study the heart sounds of 13 cases of normal people and 13 cases with mitral stenosis. The results showed that these chaotic features between the normal heart sounds and that with mitral stenosis were significantly different. Thus, this method can be applied to assistance diagnosis for the mitral stenosis.

导出引用

丁晓蓉;郭兴明;钟丽莎. 基于混沌理论的心音信号非线性动力学分析[J]. 振动与冲击, 2012, 31(15): 55-59

DING Xiao-rong;GUO Xing-ming;ZHONG Li-sha. Nonlinear Dynamic Analysis of the Heart Sound Based on Chaos Theory[J]. Journal of Vibration and Shock, 2012, 31(15): 55-59