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Identification of fractionated signals

  • US 10,314,542 B2
  • Filed: 01/12/2017
  • Issued: 06/11/2019
  • Est. Priority Date: 01/14/2016
  • Status: Active Grant
First Claim
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1. A computer implemented method of determining regions of interest for cardiac ablation using fractionation which improves performance of a processing system, the method comprising:

  • detecting, via a plurality of sensors, electro-cardiogram (ECG) signals, each ECG signal detected via one of the plurality of sensors and indicating electrical activity of a heart;

    determining, for each of the plurality of ECG signals, one or more local activation times (LATs) each indicating a time of activation of a corresponding ECG signal;

    generating, based on the determined one or more LATs of each of the plurality of ECG signals, one or more driver maps and one or more perpetuator maps, each representing the electrical activity of the heart;

    deriving parameters, comprising fractionated ECG signal potentials, from the perpetuator maps by;

    comparing an ECG signal potential within a fractionation window to a plurality of stored signal potential templates;

    selecting one of the stored signal potential templates according to a level of resemblance to the ECG signal within the fractionation window; and

    displaying a mapping, using the derived parameters, which indicates driver evidence and perpetuator evidence of areas of fractionation,wherein the regions of interest for cardiac ablation are determined in accordance with the areas of fractionation.

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