心电信号频域逆问题的一种求解方法

César Navarro, Colin Turner, O. Escalona, C. Owens, J. Anderson, A. Adgey
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引用次数: 2

摘要

心电逆问题是病态的,求解它需要较高的计算量。为了得到稳定的解,还需要附加的约束条件。利用心电信号的准周期性和传播延迟可以忽略的假设,提出了一种在频域上求解心电信号逆问题的方法。在这种方法中,通常的吉洪诺夫零阶约束应用于信号的幅值在一个选定的频域。这种方法确保更快的解决方案在空间和时间上表现良好。计算心外膜电图的一种基本方法进行了比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A method for the ECG inverse problem in the frequency domain
The Inverse ECG problem is ill-conditioned and its solution requires a relatively high computing effort. Additional constraints are required in order to obtain a stable solution. A method is proposed in which the solution of the inverse ECG problem is approached in the frequency domain, taking advantage of the assumption that propagation delays may be ignored and the quasi-periodicity of ECG. In this method usual Tikhonov zero-order constraints are applied to the amplitudes of the signals for a selected frequency domain. This method ensures faster solutions that are spatially and temporally well behaved. Calculation of epicardial electrograms is compared to a basic method.
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