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System and method for indentifying rotors in fractionated signals in persistent atrial fibrillation ablation
System and method for indentifying rotors in fractionated signals in persistent atrial fibrillation ablation
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机译:在持续性心房纤颤消融的分级信号中识别转子的系统和方法
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摘要
A computer-assisted method for quantitative characterizing atrial fibrillation (AF) in a patient includes recording unipolar atrial fibrillation signals from multiple sites in a patient's atria, calculating bipolar electrograms using unipolar AF signals recorded at adjacent sites by a computer system, applying Empirical Mode Decomposition to remove a background from the bipolar electrogram signal to obtain a filtered bipolar electrogram signal, applying Hilbert transform to an envelope function of the filtered bipolar electrogram signal to obtain a time series of instantaneous phases of the filtered bipolar electrogram signal, and identifying a rotor region in patient's atria using the instantaneous phases in the filtered bipolar electrogram signal.
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