METHOD AND APPARATUS FOR VISUALLY SUPPORTING AN ELECTROPHYSIOLOGICAL CATHETER APPLICATION

• US 20110019892A1
• Filed: 07/21/2010
• Published: 01/27/2011
• Est. Priority Date: 07/22/2009
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Rahn, Norbert, Till, Dietrich
• Application Number:
  US12/840,361
• Publication Number:
  US 20110019892A1
• Time in Patent Office: Days
• US Class Current: 382/131
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 2090/065 for measuring contact or contact pressure
• CPC Class Codes: A61B 6/12 Arrangements for detecting or locating foreign bodies
• CPC Class Codes: A61B 6/4441 the rigid structure being a C-arm or U-arm
• CPC Class Codes: A61B 6/466 adapted to display 3D data
• CPC Class Codes: A61B 6/503 for diagnosis of the heart
• CPC Class Codes: A61B 6/504 for diagnosis of blood vessels, e.g. by angiography
• CPC Class Codes: A61B 8/0891 for diagnosis of blood vessels
• CPC Class Codes: G06T 19/00 Manipulating 3D models or images for computer graphics
• CPC Class Codes: G06T 2210/41 Medical

Abstract

A method for visually supporting an electrophysiological catheter application is provided. An electroanatomical 3D mapping data of a region of interest in the heart is visualized. A 3D image data of the region of interest is captured before the catheter application. A 3D surface profile of objects in the region of interest is extracted from the 3D image data by segmentation. The electroanatomical 3D mapping data and 3D image data forming at least the 3D surface profile is assigned by registration and visualized superimposed on one another. Characteristic parameters are measured for catheter guidance during the catheter application. The characteristic parameters are compared with at least one predefined threshold value and regulation data for catheter guidance is generated as a function of the comparison result. The regulation data is integrally displayed and represented in the superimposed visualization.

Claims

1-12. -12. (canceled)

13. A method for supporting an electrophysiological catheter application on a patient, comprising:

displaying an electroanatomical 3D mapping data of a region of interest in a heart of the patient;

capturing a 3D image data of the region of interest before the catheter application;

segmenting the 3D image data for extracting a 3D surface profile data of an object in the region of interest;

registering the electroanatomical 3D mapping data with the 3D surface profile data;

superimposing the electroanatomical 3D mapping data with the 3D surface profile data;

measuring a characteristic parameter for catheter guidance during the catheter application;

comparing the characteristic parameter with a predefined threshold value;

generating a regulation data for catheter guidance based on the comparison; and

representing the regulation data in the superimposed electroanatomical 3D mapping data and the 3D surface profile data.

14. The method as claimed in claim 13, wherein the regulation data is represented in color.

15. The method as claimed in claim 13, wherein the characteristic parameter comprises values of catheter contact pressure, ablation energy, and ablation time.

16. The method as claimed in claim 15 wherein a weighted sum is calculated from the values of catheter contact pressure, ablation energy, and ablation time and is compared with the threshold value.

17. The method as claimed in claim 13, wherein the threshold value comprises an interval of a maximum value and a minimum value.

18. The method as claimed in claim 13, wherein the 3D image data is captured by an x-ray computed tomography, a magnetic resonance tomography, or a 3D ultrasound.

19. The method as claimed in claim 13, wherein an instantaneous distance between a catheter tip and a predefinable pixel of the 3D image data and/or the 3D mapping data is calculated and is stored in the regulation data.

20. The method as claimed in claim 13, wherein an instantaneous angle between a catheter tip and a predefinable pixel of the 3D image data and/or the 3D mapping data is calculated and is stored in the regulation data.

21. An apparatus for supporting an electrophysiological catheter application on a patient, comprising:

a 3D image device that captures a 3D image data of a region of interest in a heart of the patient before the catheter application;

an input interface that receives the 3D image data and an electroanatomical 3D mapping data of the region of interest;

a segmentation module that segments the 3D image data for extracting a 3D surface profile data of an object in the region of interest;

a registration module that registers the electroanatomical 3D mapping data with the 3D surface profile data;

a visualization module that superimposes the electroanatomical 3D mapping data with the 3D surface profile data;

a communication module that receives a characteristic parameter for catheter guidance during the catheter application;

a regulation module that compares the characteristic parameter with a predefined threshold value and generates a regulation data for the catheter guidance based on the comparison;

an output interface that outputs the regulation data for controlling the catheter guidance; and

a display device that represents the regulation data by visualization or by an acoustic tone.

22. The apparatus as claimed in claim 21, wherein the regulation module comprises a graphical user interface for an operator to manually select the threshold value.

23. The apparatus as claimed in claim 21, further comprising a calculation module that calculates an instantaneous distance between a catheter tip and a predefinable pixel of the 3D image data and/or the 3D mapping data and stores the instantaneous distance in the regulation data.

24. The apparatus as claimed in claim 21, further comprising a calculation module that calculates an instantaneous angle between a catheter tip and a predefinable pixel of the 3D image data and/or the 3D mapping data and stores the instantaneous angle in the regulation data.