SYSTEM AND METHOD FOR MAPPING ELECTROPHYSIOLOGY INFORMATION ONTO COMPLEX GEOMETRY
First Claim
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1. A method for mapping electrophysiological information on a three-dimensional model comprising:
- A) obtaining a three-dimensional model of a portion of an anatomy comprising position information for a plurality of location points on a surface of the portion of the anatomy;
B) obtaining an electrophysiology map comprising position information for a plurality of measurement points and electrophysiology measurements made at each of the plurality of measurement points;
C) choosing a location point from the plurality of location points in the three-dimensional model and determining a pair of closest measurement points from the electrophysiology map;
D) defining an edge between the pair of closest measurement points;
E) repeating steps C) and D) for at least a first subset of the plurality of location points in the three-dimensional model, thereby defining a plurality of edges connecting at least some of the plurality of measurement points within the electrophysiology map;
F) defining a plurality of polygons from the plurality of edges; and
G) identifying one of the plurality of location points from the three-dimensional model, identifying one of the plurality of polygons whose edges surround the identified location point, and assigning an electrophysiology level to the identified location point using electrophysiology measurements measured at one or more vertices of the identified polygon.
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Abstract
The instant invention relates to an electrophysiology apparatus and method used to measure electrical activity occurring in a portion of tissue of a patient and to visualize the electrical activity and/or information related to the electrical activity. In particular, the instant invention relates to three-dimensional mapping of the electrical activity and/or the information related to the electrical activity.
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Citations
14 Claims
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1. A method for mapping electrophysiological information on a three-dimensional model comprising:
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A) obtaining a three-dimensional model of a portion of an anatomy comprising position information for a plurality of location points on a surface of the portion of the anatomy; B) obtaining an electrophysiology map comprising position information for a plurality of measurement points and electrophysiology measurements made at each of the plurality of measurement points; C) choosing a location point from the plurality of location points in the three-dimensional model and determining a pair of closest measurement points from the electrophysiology map; D) defining an edge between the pair of closest measurement points; E) repeating steps C) and D) for at least a first subset of the plurality of location points in the three-dimensional model, thereby defining a plurality of edges connecting at least some of the plurality of measurement points within the electrophysiology map; F) defining a plurality of polygons from the plurality of edges; and G) identifying one of the plurality of location points from the three-dimensional model, identifying one of the plurality of polygons whose edges surround the identified location point, and assigning an electrophysiology level to the identified location point using electrophysiology measurements measured at one or more vertices of the identified polygon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for mapping electrophysiological information on a three-dimensional model, the system comprising:
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a modeling processor to generate a three-dimensional model of at least a portion of an anatomy comprising position information for a plurality of location points on a surface of the portion of the anatomy; an electrophysiology measurement device for generating an electrophysiology map comprising position information for a plurality of measurement points and electrophysiology measurements made at the plurality of measurement points, the electrophysiology measurements being associated with the respective measurement points at which they were measured; an edge processor to process at least a first subset of the plurality of location points on the surface of the anatomy;
to determine, for each location point within the first subset of the plurality of location points, a pair of closest measurement points in the electrophysiology map; and
to define an edge connecting the pair of closest measurement points;a geometry processor to define a plurality of polygons from a plurality of edges defined by the edge processor; and a projection processor to assign an electrophysiology level to each location point within a second subset of the plurality of location points based upon electrophysiology measurements measured at one or more vertices of a polygon from the plurality of polygons surrounding each location point within the second subset of the plurality of location points. - View Dependent Claims (12, 13, 14)
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Specification