Invasive recording of His bundle signals (HBS) in electrophysiological study (EPS) is important in determining HV interval, the time taken to activate the ventricles from the His bundle. Noninvasive surface measurements of HBS are attempted by averaging typically 100–200 cardiac cycles of ECG time series in body surface potential mapping (BSPM) and in magnetocardiography (MCG) which records weak cardiac magnetic fields by highly sensitive detectors. However, noninvasive beat-by-beat extraction of HBS is challenged by ramp-like atrial signals and noise in PR segment of the cardiac cycle.

中文翻译：

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一种希氏束信号无创逐搏可视化的方法

电生理学研究 (EPS) 中希氏束信号 (HBS) 的侵入性记录对于确定 HV 间隔（希氏束激活心室所需的时间）非常重要。HBS 的无创表面测量通常是通过在体表电位测绘 (BSPM) 和心磁图 (MCG) 中对心电图时间序列的 100-200 个心动周期进行平均来尝试，心磁图通过高灵敏度探测器记录微弱的心脏磁场。然而，无创逐搏提取 HBS 受到心动周期 PR 段中斜坡状心房信号和噪声的挑战。