System, method, and apparatus for visualizing cardiac timing information using animations
View Patent ↗An animated electrophysiology map is generated from a plurality of data points, each including measured electrophysiology information, location information, and timing information. The electrophysiology and location information can be used to generate the electrophysiology map, such as a local activation time, peak-to-peak voltage, or fractionation map. Animated timing markers can be superimposed upon the electrophysiology map using the electrophysiology, location, and timing information. For example a series of frames can be displayed sequentially, each including a static image of the electrophysiology map at a point in time and timing markers corresponding to the state or position of an activation wavefront at the point in time superimposed thereon. The visibility or opacity of the timing markers can be adjusted from frame to frame, dependent upon a distance between the timing marker and the activation wavefront, to give the illusion that the timing markers are moving along the electrophysiology map.
1. A method of generating an animated electrophysiology map, the method comprising:
receiving a plurality of data points, each data point comprising measured electrophysiology information, location information, and timing information;
generating an electrophysiology map using the electrophysiology information and location information of the plurality of data points; and
superimposing an animation of a plurality of timing markers upon the electrophysiology map using the electrophysiology information, the location information, and the timing information for the plurality of data points,
wherein superimposing an animation of a plurality of timing markers upon the electrophysiology map comprises:
generating a series of frames, each frame of the series of frames comprising:
a static image of the electrophysiology map at a point in time; and
one or more timing markers superimposed upon the static image of the electrophysiology map, wherein positions of the one or more timing markers upon the static image of the electrophysiology map correspond to a position of an activation wavefront on the electrophysiology map at the point in time, wherein the one or more timing markers are visible upon the static image of the electrophysiology map at the point in time only within a preset distance of the position of the activation wavefront on the electrophysiology map at the point in time, and wherein a visibility of a timing marker of the one or more timing markers is related to a distance between the position of the activation wavefront on the electrophysiology map at the point in time and a position of the timing marker on the electrophysiology map; and
displaying the series of frames in chronological sequence.
2. The method according to claim 1 , wherein an opacity of the timing marker is related to the distance between the position of the activation wavefront on the electrophysiology map at the point in time and the position of the timing marker on the electrophysiology map.
3. The method according to claim 1 , wherein superimposing an animation of a plurality of timing markers upon the electrophysiology map comprises depicting an activation wavefront moving across the electrophysiology map over time.
4. The method according to claim 1 , wherein superimposing an animation of a plurality of timing markers upon the electrophysiology map comprises:
increasing a visibility of a first timing marker from a minimum visibility to a maximum visibility;
decreasing the visibility of the first timing marker from the maximum visibility to the minimum visibility;
increasing a visibility of a second timing marker from the minimum visibility to the maximum visibility; and
decreasing the visibility of the second timing marker from the maximum visibility to the minimum visibility.
5. The method according to claim 4 , wherein the steps of decreasing the visibility of the first timing marker and increasing the visibility of the second timing marker occur concurrently.
6. The method according to claim 4 , wherein at least one of the step of increasing a visibility of a first timing marker and the step of increasing a visibility of a second timing marker occurs over a first time period.
7. The method according to claim 6 , wherein at least one of the step of decreasing the visibility of the first timing marker and the step of decreasing the visibility of the second timing marker occurs over a second time period longer than the first time period.
8. The method according to claim 1 , wherein the electrophysiology map comprises a local activation timing map.
9. The method according to claim 1 , wherein the electrophysiology map comprises a peak-to-peak voltage map.
10. The method according to claim 1 , wherein the electrophysiology map comprises a fractionation map.
11. The method according to claim 1 , wherein the plurality of timing markers comprise a plurality of maximum voltage over time markers.