Automatic creation of multiple electroanatomic maps
First Claim
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1. A method, comprising the steps of:
- recording electrograms of a heart of a living subject in a plurality of channels, the electrograms comprising a plurality of beats having morphologic characteristics;
automatically placing the beats into respective classifications according to a resemblance of the morphologic characteristics of the beats to members of a set of templates by calculating respective overall correlations between instances of a selected beat in all the channels and the members of the set of templates and associating the selected beat with a member of the set of templates having a highest ranked one of the overall correlations when the highest ranked one of the overall correlations exceeds a predefined correlation threshold; and
concurrently generating multiple electroanatomic maps of the heart from the beats in the respective classifications.
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Abstract
Cardiac electrograms are recorded in a plurality of channels. Beats are classified automatically into respective classifications according to a resemblance of the morphologic characteristics of the beats to members of a set of templates. Respective electroanatomic maps of the heart are generated from the classified beats.
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Citations
18 Claims
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1. A method, comprising the steps of:
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recording electrograms of a heart of a living subject in a plurality of channels, the electrograms comprising a plurality of beats having morphologic characteristics; automatically placing the beats into respective classifications according to a resemblance of the morphologic characteristics of the beats to members of a set of templates by calculating respective overall correlations between instances of a selected beat in all the channels and the members of the set of templates and associating the selected beat with a member of the set of templates having a highest ranked one of the overall correlations when the highest ranked one of the overall correlations exceeds a predefined correlation threshold; and concurrently generating multiple electroanatomic maps of the heart from the beats in the respective classifications. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus comprising:
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a probe having a plurality of electrodes on a distal portion thereof; electrical circuitry for recording respective time-varying electrograms from the electrodes when the probe is at a location in a heart of a living subject; a memory for storing the electrograms; a display; and a processor connected to the memory and operative for performing the steps of; recording the electrograms in a plurality of channels, the electrograms comprising a plurality of beats having morphologic characteristics; automatically placing the beats into respective classifications according to a resemblance of the morphologic characteristics of the beats to members of a set of templates by calculating respective overall correlations between instances of a selected beat in all the channels and the members of the set of templates and associating the selected beat with a member of the set of templates having a highest ranked one of the overall correlations when the highest ranked one of the overall correlations exceeds a predefined correlation threshold; and concurrently generating multiple electroanatomic maps of the heart from the beats in the respective classifications; and presenting the maps on the display. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A computer software product, including a non-transitory computer-readable storage medium in which computer program instructions are stored, which instructions, when executed by a computer, cause the computer to perform the steps of:
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accepting electrograms of a heart of a living subject in a plurality of channels, the electrograms comprising a plurality of beats having morphologic characteristics; automatically placing the beats into respective classifications according to a resemblance of the morphologic characteristics of the beats to members of a set of templates by calculating respective overall correlations between instances of a selected beat in all the channels and the members of the set of templates and associating the selected beat with a member of the set of templates having a highest ranked one of the overall correlations when the highest ranked one of the overall correlations exceeds a predefined correlation threshold; and concurrently generating multiple electroanatomic maps of the heart from the beats in the respective classifications. - View Dependent Claims (15, 16, 17, 18)
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Specification