Ider Y Z, Saki M C, Gcer H A
Department of Electrical Engineering, Middle East Technical University, Ankara, Turkey.
IEEE Trans Biomed Eng. 1995 Jul;42(7):731-5. doi: 10.1109/10.391173.
A method for line interference reduction to be used in signal-averaged electrocardiography (SAECG) systems is proposed and its performance is analyzed. This new method is an adaptation of a previously reported technique for removal of line interference from conventional electrocardiograms. It involves the recording of a line reference signal simultaneous with the lead signals, so that a shifted and scaled version of it can be used to subtract line interference from the leads. It is shown that this line interference subtraction method can reduce line interference effectively and without introducing any additional noise into the ECG signal. It is also shown that Late Potential diagnostic decisions are not altered when this filter is applied. It is recommended that this technique be used in SAECG when line interference is unavoidable.
提出了一种用于信号平均心电图（SAECG）系统的减少线路干扰的方法，并对其性能进行了分析。这种新方法是对先前报道的从常规心电图中去除线路干扰技术的一种改进。它涉及与导联信号同时记录线路参考信号，以便其经过移位和缩放的版本可用于从导联中减去线路干扰。结果表明，这种线路干扰减法方法可以有效减少线路干扰，且不会在心电图信号中引入任何额外噪声。还表明，应用此滤波器时不会改变晚电位诊断决策。建议在不可避免存在线路干扰的情况下，在SAECG中使用该技术。
