Patent ID: 11931158
Assignee: ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A method of mapping cardiac activity, comprising:
receiving a plurality of electrogram signals S(t) at an electroanatomical mapping system, wherein the electroanatomical mapping system includes a plurality of localization field generators that generate a non-ionizing localization field to measure a location of a multi-electrode catheter within a patient's heart, wherein each electrogram signal S(t) is a multi-component signal comprising a far-field component and a near-field component, and wherein each electrogram signal S(t) is measured by the multi-electrode catheter at a respective location within the patient's heart; and
for each of the plurality of electrogram signals S(t), using the electroanatomical mapping system to:
measure, in the non-ionizing localization field, the respective location within the patient's heart at which the respective electrogram signal S(t) is measured by the multi-electrode catheter;
associate the respective location within the patient's heart at which the respective electrogram signal S(t) is measured with the respective electrogram signal S(t);
compute a scalogram G(f, t);
compute an energy function L(t) of the scalogram G(f, t);
compute a pulse wave LPulse(t) of the energy function L(t);
compute a metric of the far-field component of the electrogram signal S(t) or the near-field component of the electrogram signal S(t) using the pulse wave LPulse(t);
define the computed metric as a metric of the electrogram signal S(t); and

outputting on a display a graphical representation of the metrics for the plurality of electrogram signals on a graphical representation of a cardiac model, wherein the metric for each of the electrogram signals S(t) is output on the graphical representation of the cardiac model according to the respective location within the patient's heart.