DETERMINATION OF CARDIAC GEOMETRY RESPONSIVE TO DOPPLER BASED IMAGING OF BLOOD FLOW CHARACTERISTICS

• US 20120155723A1
• Filed: 12/20/2010
• Published: 06/21/2012
• Est. Priority Date: 12/20/2010
• Status: Active Grant

• Current Assignee: St. Jude Medical (Abbott Laboratories Incorporated)
• Original Assignee: St. Jude Medical (Abbott Laboratories Incorporated)
• Inventors: Deno, D. Curtis, Hill, Anthony D.
• Granted Patent: US 8,948,476 B2
• Time in Patent Office: Days
• US Class Current: 382/128
• CPC Class Codes: A61B 2576/023 for the heart
• CPC Class Codes: A61B 8/06 Measuring blood flow measuring volume flow in general G01F, e.g. G01F1/66, G01F1/72; measuring speed of fluids in general G01P5/00
• CPC Class Codes: A61B 8/0841 for locating instruments
• CPC Class Codes: A61B 8/0883 for diagnosis of the heart
• CPC Class Codes: A61B 8/12 in body cavities or body tracts, e.g. by using catheters catheters per se A61M25/00
• CPC Class Codes: A61B 8/4254 using sensors mounted on the probe
• CPC Class Codes: A61B 8/488 involving Doppler signals
• CPC Class Codes: A61B 8/5246 combining images from the same or different imaging techniques, e.g. color Doppler and B-mode
• CPC Class Codes: G06T 2207/10132 Ultrasound image
• CPC Class Codes: G06T 2207/30048 Heart; Cardiac
• CPC Class Codes: G06T 2207/30104 Vascular flow; Blood flow; Perfusion
• CPC Class Codes: G06T 2207/30204 Marker
• CPC Class Codes: G06T 7/74 involving reference images or patches
• CPC Class Codes: G16H 30/40 for processing medical images, e.g. editing

Abstract

A system and method for identifying a location of a physical structure in a body is provided. The system includes an electronic control unit configured to register a first image of a portion of the body in a three-dimensional coordinate system. The electronic control unit is further configured to identify the location of the physical structure in the three-dimensional coordinate system responsive to flow of a fluid shown in the image. The fluid may comprise blood. In one embodiment, the electronic control unit is further configured to generate a second image, such as a three dimensional model, incorporating a representation of the physical structure within a larger physical environment in the three-dimensional coordinate system.

Claims

1. A system for identifying a location of a physical structure in a body, comprising:

an electronic control unit configured to;

register a first image of a portion of said body in a three-dimensional coordinate system; and

,

identify said location of said physical structure in said three-dimensional coordinate system responsive to flow of a fluid shown in said image.

2. The system of claim 1 wherein said first image is an intracardiac echocardiography image.

3. The system of claim 1 wherein said physical structure comprises a pulmonary vein.

4. The system of claim 1 wherein said physical structure comprises a orifice of a mitral valve.

5. The system of claim 1 wherein said physical structure comprises an intracardiac or intravascular space.

6. The system of claim 1 wherein said first image is registered responsive to a position of a fiducial marker in said first image and a position of a first sensor in said three-dimensional coordinate system, said sensor associated with said fiducial marker.

7. The system of claim 6 wherein said fiducial marker is said first sensor.

8. The system of claim 6 wherein said fiducial marker is positioned at a predetermined offset from said first sensor.

9. The system of claim 6 wherein said first sensor comprises an electrode.

10. The system of claim 6 wherein said first sensor comprises a coil.

11. The system of claim 1 wherein said first image is registered responsive to a position of a fiducial marker in said first image and positions of a plurality of sensors in said three-dimensional coordinate system, said plurality of sensors associated with said fiducial marker.

12. The system of claim 11 wherein said plurality of sensors establish a position and an orientation of said fiducial marker along each of three axes, each axis of said three axes orthogonal to the other two axes of said three axes.

13. The system of claim 1 wherein said electronic control unit is further configured to identify said physical structure responsive to a phase of a cardiac cycle.

14. The system of claim 1 wherein said electronic control unit is further configured to generate a second image incorporating a representation of said physical structure within a larger physical environment in said three-dimensional coordinate system.

15. The system of claim 14 wherein said electronic control unit is further configured to add points corresponding to said location of said physical structure to a point cloud corresponding to said physical environment.

16. The system of claim 14 wherein said electronic control unit is further configured to add points corresponding to said flow of said fluid to a point cloud corresponding to said physical environment.

17. The system of claim 16 wherein said points correspond to a border of said fluid in said first image.

18. The system of claim 14 wherein said second image comprises a three-dimensional model of said physical environment.

19. The system of claim 14 wherein said second image comprises an electroanatomical map of said physical environment.

20. A method for identifying a location of a physical structure in a body, comprising the steps of:

registering a first image of a portion of said body in a three-dimensional coordinate system; and

,

identifying said location of said physical structure in said three-dimensional coordinate system responsive to flow of a fluid in said image.

21. The method of claim 20 wherein said registering step includes the substep of determining a position of a fiducial marker in said first image and a position of a first sensor in said three-dimensional coordinate system, said sensor associated with said fiducial marker.

22. The method of claim 21 wherein said fiducial marker is said first sensor.

23. The method of claim 20 further comprising the step of registering said first image with a second image of said portion of said body.

24. The method of claim 20 further comprising the step of generating a second image incorporating a representation of said physical structure within a larger physical environment in said three-dimensional coordinate system.