基于小波变换的心室晚电位特征分析

The Characterization Analysis of Ventricular Late Potentials Based on Wavelet Transform

对４０ 例信号平均心电图的矢量幅值波进行了小波变换，分析了心室晚电位在时频域中的特征．研究结果表明：心室晚电位在时频空间中特征分布明显，易于识别，可有效排除噪声的影响。

The conventional time domain analysis method of ventricular late potentials is dependent on three characteristic parameters detected from vector magnitude waves. As the characterization values are affected by noise, detection accuracy rate is lower. The characteristic distribution of ventricular late potentials in time frequency domains by means of wavelet transforms is analyzed. The results show that the ventricular late potentials are easy to recognize in time frequency domain. It is effective to reduce noise affection and improve detection accuracy rate.