Two-dimensional cardiac mapping
AssigneeBiosense Webster (Israel) Ltd.
InventorAharon Turgeman
Life of this patent
Estimating the term…
Abstract
A method consisting of formulating a one-to-one correspondence between locations on a three-dimensional surface of a body cavity and coordinates in a two-dimensional coordinate frame representative of the locations. The method also includes recording respective time-varying electrical potentials at the locations. The method further includes displaying a map of the two-dimensional coordinate frame, and presenting respective graphic representations of the time-varying electrical potentials at positions in the map corresponding to the coordinates of the locations.
Claims19
A method, comprising:
- generating a plurality of three-dimensional representations of a surface of a body cavity by contacting a distal tip of a probe having an electrode on the surface of the body cavity and determining locations on the three-dimensional representations of the surface using the electrode, each representation being a different view of the same surface of the body cavity from a different viewpoint;
- measuring and recording respective time-varying electrical potentials at the locations on the three-dimensional representations of the surface of the body cavity in each of the different representations using the electrode;
- formulating a one-to-one correspondence between the locations on each of the different views of the three-dimensional representations of the surface of the body cavity and coordinates in a single two-dimensional coordinate frame representative of the locations;
- displaying a map of the one two-dimensional coordinate frame;
- and
- presenting respective graphic representations of the time-varying electrical potentials at positions in the map corresponding to the coordinates of the locations.
Apparatus, comprising:
- a controller, configured to:
- generate a plurality of three-dimensional representations of a surface of a body cavity from a distal tip of a probe having an electrode in contact with the surface of the body cavity and determine locations on the three-dimensional representations of the surface in response to recordings from the electrode, each representation being a different view of the same surface of the body cavity from a different viewpoint;
- measure and record respective time-varying electrical potentials at the locations on the three-dimensional representations of the surface of the body cavity in each of the different representations using the electrode;
- formulate a one-to-one correspondence between the locations on each of the different views of the three-dimensional representations of the surface of the body cavity and coordinates in a single two-dimensional coordinate frame representative of the locations;
- display a map of the single two-dimensional coordinate frame on a display screen;
- and
- present respective graphic representations of the time-varying electrical potentials at positions in the map corresponding to the coordinates of the locations.
A computer software product comprising a non-transitory computer-readable medium having computer program instructions recorded therein, which instructions, when read by a computer, cause the computer to:
- generate a plurality of three-dimensional representations of a surface of a body cavity from a distal tip of a probe having an electrode in contact with the surface of the body cavity and determine locations on the three-dimensional representations of the surface in response to recordings from the electrode, each representation being a different view of the same surface of the body cavity from a different viewpoint;
- measure and record respective time-varying electrical potentials at locations on the three-dimensional representations of the surface of the body cavity in each of the different representations using the electrode;
- formulate a one-to-one correspondence between the locations on each of the different views of the three-dimensional representations of the surface of the body cavity and coordinates in a single two-dimensional coordinate frame representative of the locations;
- display a map of the single two-dimensional coordinate frame;
- and
- present respective graphic representations of the time-varying electrical potentials at positions in the map corresponding to the coordinates of the locations.
Dependencies are inferred from the claim text.