摘要
应用小波变换分析方法,对正常人和典型心脏病人的心音数据分组进行不同尺度的小波变换,得出了综合反映心音的时间、频率和强度三维信息的彩色三维心音图。经小波变换的三维心音图更为直观详尽地反映出各组心音信号在不同时域、频域与强度范围内细节性的信息。对提取的时频参数进行分析,各组间存在显著性差异。该研究为临床心脏病诊断和辅助教学提供了一个有效的工具,为心音分析的进一步研究提供了基础资料与方法。
The wavelet transform analysis method was applied in studying heart sounds of normal and typical heart disease pa-tients.By this method,heart sounds could be studied according to differ ent wavelet analysis scales and time,frequency,ampli-tude.The three-dimensional phonocardiogram after wavelet analyzing could describe all the information of frequency domain,time domain and amplitude domain perfectly.The parameters of time and frequency analysis showed significant different between dif fer-ent groups.As an advantageous and convenient method of heart sounds analysis for clinical diagnosis and assisted instruction of cardiopathy,this study also supplied foundational data for further studying.
出处
《中国医学物理学杂志》
CSCD
2001年第2期110-112,共3页
Chinese Journal of Medical Physics
基金
山东省科委资助项目(951156202)
关键词
心音
小波变换
心音图
时频分析
heart sound
wavelet transform
phonocardiogram
time-frequency analysis
