Method and device for visually supporting an electrophysiology catheter application in the heart

摘要

The invention relates to a method and a device for visually supporting an electrophysiology catheter application in the heart, whereby electroanatomical 3D mapping data of an area of the heart to be treated which are provided during performance of the catheter application are visualized. Before the catheter application is carried out, 3D image data of the area to be treated are recorded by means of a tomographical 3D imaging method, a 3D surface profile of objects in the area to be treated is extracted from the 3D image data by segmentation and the electroanatomical 3D mapping data provided and the 3D images representing the 3D surface profile are associated with each other in the correct position and dimension relative each other and e.g. visualized in an superimposed manner during the catheter application. The present method and the corresponding device allow for an improved orientation of the user who carries out an electrophysiology catheter application in the heart.

主权项

1. A method of visually supporting an electrophysiology catheter application in the heart, comprising:
recording 3D image data of the area to be treated using a tomographical 3D imaging device before the catheter application; segmenting the 3D image data to extract a 3D surface profile of objects in an area to be treated from the 3D image data by segmentation; and correlating electroanatomical 3D mapping data and 3D image data representing the 3D surface profile by surface matching, in at least one stage of registration, the 3D surface profile from the 3D image data to a 3D surface profile from the 3D mapping data; displaying the correlated electroanatomical 3D mapping data and 3D image data representing at least the 3D surface profile, the displayed electroanatomical 3D mapping data and 3D image data representing at least the registered 3D surface profile with correct position and dimension, wherein,
the at least one stage of registration includes a first stage of the performance of the catheter application and a later, second stage of the performance of the catheter application,the correlating in the first stage includes registering using the electroanatomical 3D mapping data captured during the first stage, andthe correlating in the second stage includes registering using the registration obtained in the first stage and the electroanatomical 3D mapping data captured during the second stage,the first stage uses at least one of distinct anatomical points and artificial markers and the second stage refines the registration obtained in the first stage by the surface matching, andthe displaying includes,
displaying at least a part of a catheter in real time in the representation of the 3D image data representing at least the 3D surface profile,calculating an instantaneous distance of a tip of the catheter from a picture element of the 3D image data, andindicating the calculated distance by color coding the catheter.