METHOD AND SYSTEM FOR MULTI-CHANNEL BIOSIGNAL PROCESSING
First Claim
1. A method for obtaining a refined biosignal of a living being located in a turbulent electromagnetic environment, the method comprising:
- collecting reference data indicative of statistical properties of artifacts induced by the turbulent electromagnetic environment into a biosignal of a certain type;
measuring multiple channels of a biosignal of the living being in the turbulent electromagnetic environment, wherein the biosignal is of said certain type;
detecting artifacts in one or more of the multiple channels using the reference data,characterized byderiving parameters for a desired linear combination of the multiple channels, wherein the desired linear combination is less prone to the artifacts than the measured multiple channels of the biosignal; and
applying a linear combination to desired signal samples of the multiple channels, thereby to obtain the refined biosignal, wherein the linear combination is defined by the parameters derived.
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Abstract
The invention relates to a method and system for obtaining a refined biosignal, typically an electrocardiogram (ECG), of a living being located in a turbulent electromagnetic environment. Reference data indicative of statistical properties of biosignal artifacts generated by the turbulent electromagnetic environment is collected and multiple channels of the biosignal of the patient are measured in the turbulent electromagnetic environment. Artifacts in one or more of the multiple channels are detected using the reference data and parameters are derived for a linear combination of the multiple channels, which is less prone to the artifacts than the measured multiple channels of the biosignal. The refined biosignal is obtained by applying a linear combination to desired signal samples of the multiple channels, the linear combination being defined by the parameters derived.
20 Citations
25 Claims
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1. A method for obtaining a refined biosignal of a living being located in a turbulent electromagnetic environment, the method comprising:
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collecting reference data indicative of statistical properties of artifacts induced by the turbulent electromagnetic environment into a biosignal of a certain type; measuring multiple channels of a biosignal of the living being in the turbulent electromagnetic environment, wherein the biosignal is of said certain type; detecting artifacts in one or more of the multiple channels using the reference data, characterized by deriving parameters for a desired linear combination of the multiple channels, wherein the desired linear combination is less prone to the artifacts than the measured multiple channels of the biosignal; and applying a linear combination to desired signal samples of the multiple channels, thereby to obtain the refined biosignal, wherein the linear combination is defined by the parameters derived. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for obtaining a refined biosignal of a living being located in a turbulent electromagnetic environment, the system comprising:
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a data collection module for collecting reference data indicative of statistical properties of artifacts induced by the turbulent electromagnetic environment into a biosignal of a certain type; a measuring module for measuring multiple channels of a biosignal of the living being in the turbulent electromagnetic environment, wherein the biosignal is of said certain type; an artifact detection module for detecting artifacts in one or more of the multiple channels using the reference data, characterised in that the system further comprises; a calculation module for deriving parameters for a desired linear combination of the multiple channels, the linear combination being less prone to artifacts than the measured multiple channels of the biosignal; and a refining module for applying a linear combination to desired signal samples of the multiple channels, thereby to obtain the refined biosignal, wherein the linear combination is defined by the parameters derived by the calculation module. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification