基于独立元分析的心外膜电位标测信号去噪方法

A Denoising Method of Epicardial Potential Mapping Signals Based on ICA

使用独立元分析方法,提出了一种以独立元对各电极点投影系数的离散度为噪声独立元选取准则,设计了一套心外膜标测电位去噪新方法。实验结果表明,该方法可有效地去除心外膜电位标测信号中的电极间串扰和外界干扰等噪声,突出电极点上检测到的除极信号。因此,该方法适用于心外膜电位标测系统的去噪工作。

A new denoising method is presented in the paper, based on the independent component analysis（ICA） and the noise independent component selection measurement which is the dispersivity of the independent component＇s projection coefficients to each electrode. The results indicate that the method can denoise EPM signals with giving prominence to electrodes＇ true depolarization signals. So it＇ s fit well for the EPM system.