Suppression of global activation signals during anatomical mapping
First Claim
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1. An anatomical mapping system comprising:
- a plurality of mapping electrodes configured to detect activation signals of intrinsic physiological activity within an anatomical structure, each of the plurality of mapping electrodes having an electrode location and channel;
a processing system associated with the plurality of mapping electrodes, wherein the processing system is configured to record the detected activation signals and associate one of the plurality of mapping electrodes with each recorded activation signal, and wherein the processing system is further configured to;
identify at least one mapping electrode not in direct contact with the anatomical structure,determine a far-field activation signal from the identified at least one mapping electrode by determining a lowest maximum amplitude of the recorded activation signals of the identified at least one mapping electrode,determine near-field activation signals from the recorded activation signals based on the determined far-field activation signal, andgenerate an activation map of the near-field activation signals; and
a display configured to display the activation map of the near-field activation signals.
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Abstract
A method for mapping an anatomical structure includes sensing activation signals of intrinsic physiological activity with a plurality of electrodes disposed in or near the anatomical structure, identifying at least one of the electrodes not in direct contact with the anatomical structure, and adjusting the activation signals sensed by each of the plurality of electrodes based on the activation signals sensed by the identified at least one of the electrodes not in direct contact with the anatomical structure.
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Citations
11 Claims
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1. An anatomical mapping system comprising:
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a plurality of mapping electrodes configured to detect activation signals of intrinsic physiological activity within an anatomical structure, each of the plurality of mapping electrodes having an electrode location and channel; a processing system associated with the plurality of mapping electrodes, wherein the processing system is configured to record the detected activation signals and associate one of the plurality of mapping electrodes with each recorded activation signal, and wherein the processing system is further configured to; identify at least one mapping electrode not in direct contact with the anatomical structure, determine a far-field activation signal from the identified at least one mapping electrode by determining a lowest maximum amplitude of the recorded activation signals of the identified at least one mapping electrode, determine near-field activation signals from the recorded activation signals based on the determined far-field activation signal, and generate an activation map of the near-field activation signals; and a display configured to display the activation map of the near-field activation signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An anatomical mapping system comprising:
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a plurality of mapping electrodes configured to detect activation signals of intrinsic physiological activity within an anatomical structure, each of the plurality of mapping electrodes having an electrode location and channel; a processing system associated with the plurality of mapping electrodes, wherein the processing system is configured to record the detected activation signals and associate one of the plurality of mapping electrodes with each recorded activation signal, and wherein the processing system is further configured to; identify at least one mapping electrode not in direct contact with the anatomical structure, determine a far-field activation signal from the identified at least one mapping electrode, and filter the far-field activation signals from the detected activation signals to determine near-field activation signals from the recorded activation signals; and a display configured to display an activation map of the near-field activation signals. - View Dependent Claims (10, 11)
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Specification