Visualization of physiological data for virtual electrodes

• US 8,725,241 B2
• Filed: 11/09/2009
• Issued: 05/13/2014
• Est. Priority Date: 11/07/2008
• Status: Active Grant

• Current Assignee: CardioInsight Technologies Inc. (Medtronic Plc)
• Original Assignee: CardioInsight Technologies Inc. (Medtronic Plc)
• Inventors: Ramanathan, Charulatha, Wodlinger, Harold M., Jia, Ping, Gasparakis, Harris, Arless, Steven G., Anderson, John E.
• Primary Examiner(s): Koharski, Chrsitopher D
• Assistant Examiner(s): CAREY, MICHAEL JAMES
• Application Number:
  US13/128,136
• Publication Number:
  US 20110206256A1
• Time in Patent Office: 1,646 Days
• Field of Search: 600/523, 600/525
• US Class Current: 600/523
• CPC Class Codes: A61B 2018/00839 Bioelectrical parameters, e.g. ECG, EEG
• CPC Class Codes: A61B 5/283 Invasive
• CPC Class Codes: A61B 5/319 Circuits for simulating ECG signals
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16H 50/50 for simulation or modelling of medical disorders
• CPC Class Codes: G16Z 99/00 Subject matter not provided for in other main groups of this subclass

Abstract

Systems and methods can be utilized to visualize physiological data relative to a surface region (e.g., an organ) of a patient. A computer-implemented method can include storing electroanatomic data in memory representing electrical activity for a predetermined surface region of the patient and providing an interactive graphical representation of the predetermined surface region of the patient. A user input is received to define location data corresponding to a user-selected location for at least one virtual electrode on the graphical representation of the predetermined surface region of the patient. A visual representation of physiological data for the predetermined surface region of the patient is generated based on the location data and the electroanatomic data.

Claims

1. A computer-implemented method for visualizing physiological data of a patient, the method comprising:

storing in memory electroanatomic data representing electrical activity for a predetermined surface region of the patient;

providing an interactive graphical representation of the predetermined surface region of the patient;

receiving a user input that defines location data corresponding to a user-selected location for at least one roving virtual electrode on the graphical representation of the predetermined surface region of the patient; and

dynamically generating a graphical representation of the physiological data corresponding to a current location of the roving virtual electrode relative to the graphical representation of the predetermined surface region of the patient, such that the graphical representation of the physiological data is modified continuously responsive to changes in the current location of the roving virtual electrode as the roving virtual electrode is moved.

2. The method of claim 1, further comprising superimposing a graphical representation of the at least one roving virtual electrode on the interactive graphical representation of the predetermined surface region of the patient in response to the receiving of the user input.

3. The method of claim 1, wherein the graphical representation of the physiological data corresponding to the current location of the user interface pointing element is generated adjacent to the current location of the user interface pointing element.

5. The method of claim 1, further comprising:

assigning a configuration of the at least one virtual electrode; and

storing the assigned configuration as electrode configuration data for the at least one virtual electrode, such that the visual representation of physiological data for the predetermined surface region is generated based on the location data, the electroanatomic data and the electrode configuration data.

6. The method of claim 5, wherein the electrode configuration data for the at least one virtual electrode further comprises a type of electrode configuration and a resolution that defines a number of one or more electrodes and a spatial relationship of the one or more electrodes.

7. The method of claim 6, further comprising:

storing electrode template data that represents a plurality of predefined electrode templates corresponding to different electrode configurations; and

setting the configuration data as corresponding to one of the plurality of different predefined electrode types in response to a user input selecting a respective one of the plurality of predefined electrode templates.

8. The method of claim 5, further comprising generating a graphical representation of the at least one virtual electrode based on the configuration data, the graphical representation of the at least one virtual electrode being independently moveable relative to the interactive graphical representation of the predetermined surface region of the patient.

9. The method of claim 7, wherein at least one of the plurality of predefined electrode templates further comprises different types of electrophysiology catheters.

10. The method of claim 7, wherein at least one of the plurality of predefined electrode templates further comprises a multi-dimensional arrangement of electrodes, the multi-dimensional surface conforming to a contour of the predetermined surface region of the patient at the user-selected location where the arrangement of electrodes is positioned such that each of the electrodes has a respective location corresponding to a location on the predetermined surface region of the patient.

11. The method of claim 1, wherein the electroanatomic data further comprises electroanatomic data computed for a plurality of points distributed across the predetermined surface region of the patient based on electrical data acquired from the patient.

12. The method of claim 11, further comprising selecting at least one time interval for the electroanatomical data in response to a user input, such that the visual representation of physiological data for the predetermined surface region of the patient comprises a graphical representation of patient electrical activity that is generated based on the location data and the electroanatomical data for the selected at least one time interval.

13. The method of claim 12, further comprising generating a graphical representation of an electroanatomic map superimposed on the interactive graphical representation of the predetermined surface region of the patient based on the electroanatomical data for the selected at least one time interval.

14. The method of claim 12, further comprising applying an inverse method to compute the electroanatomical data for the predetermined surface region based on patient electrical data acquired for the patient via non-invasive body surface electrodes and patient geometry data acquired for the patient.

15. The method of claim 14, wherein the computed electroanatomical data corresponds to simultaneous electrical activity that is time indexed over the selected at least one time interval for each of the plurality of points distributed across the predetermined surface region of the patient.

16. The method of claim 15, wherein the predetermined surface region of the patient comprises a surface of the patient'"'"'s heart.

17. The method of claim 11, further comprising computing the electroanatomical data for the predetermined surface region of the patient based on patient electrical data collected from electrodes disposed on at least one electrophysiology catheter while in vivo within the patient relative to a corresponding surface of the patient'"'"'s organ.

18. The method of claim 1, wherein the predetermined surface region comprises a three-dimensional surface of an organ of the patient, and

wherein the representation of physiological data further comprises a representation of physiological information spatially visualized on a graphical representation of the organ.

19. The method of claim 18, wherein the location data that defines the anatomical position for the representation of the at least one virtual electrode is received in response to selecting the anatomical position on a model of the organ via a graphical user interface element.

20. The method of claim 19, wherein the graphical user interface element comprises a graphical representation of the at least one virtual electrode.

21. The method of claim 1, further comprising:

selecting the user-selected location as at least one region of interest comprising a plurality of points on the graphical representation of the predetermined surface region of the patient; and

computing statistical information based on the electroanatomic data for plurality of points in the selected at least one region of interest.

4. A computer-implemented method for visualizing physiological data of a patient, the method comprising:

storing in memory electroanatomic data representing electrical activity for a predetermined surface region of the patient;

providing an interactive graphical representation of the predetermined surface region of the patient;

receiving a user input that defines location data corresponding to a user-selected location for at least one virtual electrode on the graphical representation of the predetermined surface region of the patient; and

dynamically generating a graphical representation of the physiological data corresponding to a current location of a user interface pointing element relative to the predetermined surface region of the patient, such that the graphical representation is modified automatically responsive to changes in the current location of the user interface pointing element;

in response to receiving a corresponding user input, the graphical representation of the physiological data corresponding to user selected location location being maintained as a first graphical representation for a fixed virtual electrode at the user selected current location regardless of movement of the user interface pointing element; and

dynamically generating a second graphical representation of the physiological data corresponding to a roving virtual electrode that is modified continuously responsive to changes in the current location of the roving virtual electrode as the roving virtual electrode is moved.

22. A system for visualizing physiological data relative to an organ of a patient, the system comprising:

electroanatomic data for the patient stored in memory;

a patient geometry model stored as patient geometry data in the memory, the patient geometry data representing at least one surface region of the organ of the patient;

computer readable instructions stored in the memory, the computer readable instructions comprising;

a location selector programmed to generate location data as a function of a position of at least one roving virtual electrode location relative to the patient geometry model; and

an output generator that generates a visual representation of physiological data for the roving virtual electrode that is determined as a function of the location data and the electroanatomic data, the representation of physiological data for the roving virtual electrode being updated continuously responsive to changes in the current location of the roving virtual electrode as the roving virtual electrode is moved.

26. The system of claim 22, wherein the computer readable instructions further comprise:

a virtual electrode generator programmed for generating the visual representation of the roving virtual electrode in response to selecting one or more locations in the at least one surface region via a user interface pointing element, which defines the location data, the output generator dynamically modifying the visual representation of the physiological data according to changes in the location data representing an anatomical position of the roving virtual electrode relative to the graphical representation of the predetermined surface region of the patient.

23. A system for visualizing physiological data for a patient, the system comprising:

means for storing electroanatomic data representing electrical activity for at least a portion of an organ of the patient;

means for storing patient geometry data that defines geometry for at least the portion of the organ;

means for providing a graphical representation of patient anatomy based on the geometry data;

means for receiving a user input corresponding to position on the graphical representation of patient anatomy, the user input varying as a function of the position of user interface pointing element, corresponding to a roving virtual electrode, and for providing corresponding location data that varies as a function of the position of the user interface pointing element as the user interface pointing element is moved relative to the graphical representation of patient anatomy;

means for computing physiological results data for the at least one user-selected location based on the location data and the electroanatomic data.

24. A computer-implemented method for visualizing physiological data of a patient, the method comprising:

storing in memory electroanatomic data representing electrical activity for a predetermined surface region of the patient;

providing an interactive graphical representation of the predetermined surface region of the patient;

assigning a configuration of at least one virtual electrode in response to a user input, the assigned configuration specifying a number of one or more electrodes and a spatial relationship for each of the one or more electrodes for the at least one virtual electrode; and

storing the assigned configuration as electrode configuration data for the at least one virtual electrode;

receiving a user input that defines location data corresponding to a user-selected location for the at least one virtual electrode on the graphical representation of the predetermined surface region of the patient; and

generating a visual representation of the physiological data for the predetermined surface region for each virtual electrode based on the location data, the electroanatomic data and the assignment data.

25. The method of claim 24, wherein the at least one virtual electrode comprises a roving virtual electrode, the method further comprising:

dynamically modifying the visual representation of the physiological data in response to changes in a current location of a roving virtual electrode corresponding to the roving virtual electrode as the roving virtual electrode is moved relative to the graphical representation of the predetermined surface region of the patient.