Patent ID: 11944459
Assignee: BIOSENSE WEBSTER (ISRAEL) LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 10:
11. A method for estimating residual noise energy of an electrocardiogram (ECG) signal, the method comprising:
measuring, using a plurality of electrodes, an electrical signal of a cardiac structure to produce the ECG signal;
determining a segment duration based on a linear trend energy of the ECG signal, wherein the linear trend energy corres ponds to an increasing or decreasing slope of the ECG signal;
segmenting the ECG signal into a plurality of segments in accordance with the determined segment duration;
for each of the plurality of segments, removing the linear trend energy and direct current (DC) energy from the segment, and calculating an estimated noise energy of the segment;
selecting a subset of the plurality of segments with a minimum estimated noise energy; estimating the residual noise energy of the ECG signal by calculating an average of the estimated noise energy over the subset of segments; managing a noise level of the ECG signal using the estimated residual noise energy of the ECG signal; and enabling a clinician's ability to diagnose and treat a heart disorder according to the selecting the subset of segments.