ASSESSING INTRA-CARDIAC ACTIVATION PATTERNS
First Claim
1. A method comprising:
- determining a location of each of a plurality of electrodes distributed on a torso of a patient;
projecting, with a processing unit, the locations of the plurality of electrodes onto a surface of a model torso;
receiving, by the processing unit, a torso-surface potential signal sensed by each of the plurality of electrodes;
projecting, by the processing unit, each of the torso-surface potential signals onto a respective location on the surface of the model torso based on the determined locations of the electrodes; and
determining, by the processing unit, a set of cardiac activation times for a model heart within the model torso based on the projected torso-surface potential signals and a location of the model heart within the model torso.
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Abstract
Techniques for evaluating cardiac electrical dyssynchrony are described. In some examples, an activation time is determined for each of a plurality of torso-surface potential signals. The dispersion or sequence of these activation times may be analyzed or presented to provide variety of indications of the electrical dyssynchrony of the heart of the patient. In some examples, the locations of the electrodes of the set of electrodes, and thus the locations at which the torso-surface potential signals were sensed, may be projected on the surface of a model torso that includes a model heart. The inverse problem of electrocardiography may be solved to determine electrical activation times for regions of the model heart based on the torso-surface potential signals sensed from the patient.
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Citations
17 Claims
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1. A method comprising:
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determining a location of each of a plurality of electrodes distributed on a torso of a patient; projecting, with a processing unit, the locations of the plurality of electrodes onto a surface of a model torso; receiving, by the processing unit, a torso-surface potential signal sensed by each of the plurality of electrodes; projecting, by the processing unit, each of the torso-surface potential signals onto a respective location on the surface of the model torso based on the determined locations of the electrodes; and determining, by the processing unit, a set of cardiac activation times for a model heart within the model torso based on the projected torso-surface potential signals and a location of the model heart within the model torso. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system comprising:
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a plurality of electrodes distributed on a torso of a patient; and a processing unit configured to project the locations of the plurality of electrodes onto a surface of a model torso, receive a torso-surface potential signal sensed by each of the plurality of electrodes, projecting each of the torso-surface potential signals onto a respective location on the surface of a model torso based on the determined locations of the electrodes, and determine a set of cardiac activation times for a model heart within the model torso based on the projected torso-surface potential signals and a location of the model heart within the model torso. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A computer-readable storage medium comprising instructions that, when executed, cause a processor to:
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project locations of a plurality of electrodes distributed on a torso of a patient onto a surface of a model torso; receive a torso-surface potential signal sensed by each of the plurality of electrodes; project each of the torso-surface potential signals onto a respective location on the surface of the model torso based on the determined locations of the electrodes; and determine a set of cardiac activation times for a model heart within the model torso based on the projected torso-surface potential signals and a location of the model heart within the model torso.
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Specification