Identification of fractionated signals
First Claim
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.
1 Assignment
0 Petitions
Accused Products
Abstract
A system and method of determining regions of interest for heart ablation using fractionation. The method can comprise detecting, via sensors, electro-cardiogram (ECG) signals, each ECG signal detected via one of the sensors and indicating electrical activity of a heart, determining, for each of the ECG signals, activation times (LATs) each indicating a time of activation of a corresponding ECG signal, generating, based on the determined LATs of each of the ECG signals, one or more driver maps and one or more perpetuator maps, each representing the electrical activity of the heart, deriving parameters from the driver and perpetuator maps, using at least fractionation, processing and combining the derived parameters into driver evidence and perpetuator evidence, and determining the regions of interest for heart ablation in accordance with the fractionation used to derive the driver evidence and the perpetuator evidence.
-
Citations
14 Claims
-
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. - View Dependent Claims (2, 3)
-
-
4. 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; determining peaks and valleys of an ECG signal within windows of fractionation; calculating a number of fractionation slopes of the ECG signal between the peaks and valleys of the ECG ECG signal; comparing the number of fractionation slopes to a predetermined threshold; determining an ECG signal to be a fractionated signal if the number of fractionation slopes is greater than a predetermined threshold; and displaying a fractionation map of the ECG signal, wherein the regions of interest for cardiac ablation are determined from the fractionation map. - View Dependent Claims (5, 6, 7)
-
-
8. A system of determining regions of interest for cardiac ablation using fractionation which improves processing performance, the system comprising:
-
a plurality of sensors, each configured to detect one of a plurality of electro-cardiogram (ECG) signals over time, each ECG signal indicating electrical activity of a heart; a processing device comprising one or more processor configured to; determine, 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; generate, 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; derive 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; and selecting one of the stored signal potential templates according to a level of resemblance to the ECG signal within the fractionation window; and a display device configured to display 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. - View Dependent Claims (9, 10)
-
-
11. A system of determining regions of interest for cardiac ablation using fractionation which improves processing performance, the system comprising:
-
a plurality of sensors, each configured to detect one of a plurality of electro-cardiogram (ECG) signals over time, each ECG signal indicating electrical activity of a heart; a processing device configured to; detect, 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; determine, 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; generate, 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; derive parameters, comprising fractionated ECG signal potentials, from the perpetuator maps by; determining peaks and valleys of an ECG signal within windows of fractionation; calculating a number of fractionation slopes of the ECG signal between the peaks and valleys of the ECG ECG signal; comparing the number of fractionation slopes to a predetermined threshold; determining an ECG signal to be a fractionated signal if the number of fractionation slopes is greater than a predetermined threshold; and displaying a fractionation map of the ECG signal, wherein the regions of interest for cardiac ablation are determined from the fractionation map. - View Dependent Claims (12, 13, 14)
-
Specification