System and method for reconstructing cardiac activation information
First Claim
1. A method of reconstructing cardiac activation information, the method comprising:
- accessing, by a computing device, pairs of cardiac signals out of a plurality of cardiac signals obtained from a patient, the pairs having a first cardiac signal that is common among the pairs and second cardiac signals that are different among the pairs;
processing, by the computing device, the first cardiac signal and the second cardiac signals of the pairs to identify points of change in the first cardiac signal at which a derivative of the first cardiac signal diverges with respect to derivatives of the second cardiac signals;
determining, by the computing device, a correspondence among the points of change; and
assigning, by the computing device, an activation onset time at a point in the first cardiac signal based on the correspondence among the points of change to define a cardiac activation, wherein the cardiac activation indicates a beat in the first cardiac signal.
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Abstract
An example system and method of reconstructing cardiac activation information are disclosed. In accordance therewith, there are accessed pairs of cardiac signals out of a plurality of cardiac signals obtained from a patient. The pairs have a first cardiac signal that is common among the pairs and second cardiac signals that are different among the pairs. The first cardiac signal and the second cardiac signals of the pairs are processed to identify points of change in the first cardiac signal at which a derivative of the first cardiac signal diverges with respect to derivatives of the second cardiac signals. An activation onset time is assigned at a point in the first cardiac signal based on correspondence of the points of change to define a cardiac activation indicating a beat.
193 Citations
34 Claims
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1. A method of reconstructing cardiac activation information, the method comprising:
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accessing, by a computing device, pairs of cardiac signals out of a plurality of cardiac signals obtained from a patient, the pairs having a first cardiac signal that is common among the pairs and second cardiac signals that are different among the pairs; processing, by the computing device, the first cardiac signal and the second cardiac signals of the pairs to identify points of change in the first cardiac signal at which a derivative of the first cardiac signal diverges with respect to derivatives of the second cardiac signals; determining, by the computing device, a correspondence among the points of change; and assigning, by the computing device, an activation onset time at a point in the first cardiac signal based on the correspondence among the points of change to define a cardiac activation, wherein the cardiac activation indicates a beat in the first cardiac signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A system to reconstruct cardiac activation information, the system comprising:
a computing device storing instructions that, when executed by the computing device, cause the computing device to perform operations comprising; accessing pairs of cardiac signals out of a plurality of cardiac signals obtained from a patient, the pairs having a first cardiac signal that is common among the pairs and second cardiac signals that are different among the pairs; processing the first cardiac signal and the second cardiac signals of the pairs to identify points of change in the first cardiac signal at which a derivative of the first cardiac signal diverges with respect to derivatives of the second cardiac signals; determining a correspondence among the points of change; and assigning an activation onset time at a point in the first cardiac signal based on the correspondence among the points of change to define a cardiac activation, wherein the cardiac activation indicates a beat in the first cardiac signal. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
Specification