METHOD AND APPARATUS FOR MAPPING CARDIAC CHAMBER

摘要

PROBLEM TO BE SOLVED: To provide the three-dimensional images of the cardiac chamber. SOLUTION: This method for intracardially mapping a condition such as the electrical or mechanical property of the cardiac chamber uses a catheter having a distal tip and at least one condition sensor contained therein or proximate thereto. The at least one sensor is capable of sensing condition information in the chamber and provides the three-dimensional position of the catheter tip in a positional reference coordinate system. The method includes the processes of acquiring the first and second images of the chamber. The images are acquired from different projections and contain the topological information of the chamber. The camber images are positioned by using the positional reference coordinate system. The catheter tip is advanced into the cardiac and is moved under the guidance of the topological information contained in or derived from the images. Conditions and position information are acquired at each of data acquisition points.