Method and apparatus for analyzing the electrical activity of the heart
First Claim
1. A method of analyzing the electrical activity of the heart by Body Surface Potential Mapping (BSMP), comprising, applying an array of electrodes over the thoracic region of a subject'"'"'s body for producing measurements of the electrical signals generated in said thoracic region, and processing said measurements for indicating certain electrical events in the subject'"'"'s body;
- characterized in utilizing said array of electrodes to measure only the times of crossing of the electrical signals over a preset threshold.
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Abstract
A method and apparatus for analyzing the electrical activity of the heart by Body Surface Potential Mapping (BSMP) in which an array of electrodes are applied over the thoracic region of a subject'"'"'s body for producing measurements of the electrical signals generated in the thoracic region, and the measurements are processed for indicating certain electrical events in the subject'"'"'s body. The array of electrodes are utilized to measure only the times of crossing of the electrical signals over a preset threshold.
109 Citations
17 Claims
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1. A method of analyzing the electrical activity of the heart by Body Surface Potential Mapping (BSMP), comprising, applying an array of electrodes over the thoracic region of a subject'"'"'s body for producing measurements of the electrical signals generated in said thoracic region, and processing said measurements for indicating certain electrical events in the subject'"'"'s body;
- characterized in utilizing said array of electrodes to measure only the times of crossing of the electrical signals over a preset threshold.
- View Dependent Claims (2, 3, 4)
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5. A method analyzing the electrical activity of the heart by Body Surface Potential Mapping (BSMP), comprising, applying an array of electrodes over the thoracic region of a subject'"'"'s body for producing measurements of the electrical signals generated in said thoracic region, and processing said measurements for indicating certain electrical events in the subject'"'"'s body;
- characterized in that the processing of said measurements incudes the following steps;
(a) estimating the covariance matrix of random processes from the measurements by said array of electrodes; (b) decomposing said covariance matrix into the eigenfunction basis; (c) evaluating from a partial set of said measurements for the respective subject, the coefficient of a linear combination of computed eigenfunctions; and (d) expanding said computed eigenfunctions to obtain a complete reconstruction of the BSPM. - View Dependent Claims (6, 7, 8, 9)
- characterized in that the processing of said measurements incudes the following steps;
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10. Apparatus for analyzing the electrical activity of the heart by Body Surface Potential Mapping (BSPM), comprising:
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an array of electrodes placeable over the thoracic region of a subject'"'"'s body; measuring means for producing measurements of the electrical signals generated in said thoracic region as detected by said array of electrodes; and processor means for procesing said measurements for indicating certain electrical events in the subject'"'"'s body; characterized in that said measurement means measures only the times of crossing of the electrical signals over a preset threshold as detected by said array of electrodes. - View Dependent Claims (11, 12, 13)
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14. Apparatus for analyzing the electrical activity of the heart by Body Surface Potential Mapping (BSPM), comprising:
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an array of electrodes placeable over the thoracic region of a subject'"'"'s body; measuring means for producing measurements of the electrical signals generated in said thoracic region as detected by said array of electrodes; and processor means for processing said measurements for indicating certain electrical events in the subject'"'"'s body; characterized in that said processor means includes; (a) means for estimating the covariance matrix of random processes from the measurements by said array of electrodes; (b) means for decomposing said covariance matrix into the eigenfunction basis; (c) means for evaluating, from a partial set of said measurements for the respective subject, the coefficent of a linear combination of computed eigenfunctions; and (d) means for expanding said computed eigenfunctions to obtain a complete reconstruction of the BSPM. - View Dependent Claims (15, 16, 17)
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Specification