LOCALIZATION FOR ELECTROCARDIOGRAPHIC MAPPING

摘要

A system (10) can localize an object in a patient's body. The system (10) can include a pulse generator (18 or 30) configured to provide a localization signal to at least one electrode that is fixed to the object in the patient's body. A sensor array (22) can be configured to detect an electrical field produced in response to the localization signal and provide respective sensor signals. A map generator (42) can be configured to reconstruct electrical signals based on the respective sensor signals and geometry data representing a geometric relationship between patient anatomy and the sensor array. A location calculator (50) can determine a location where the localization signal was applied based on the reconstructed electrical signals.

主权项

1. A method for localizing an object, comprising:
controlling a localization signal that is supplied to an electrode, associated with the object, to produce an electrical field in tissue of a patient; storing sensed electrical data in memory based on sensing electrical signals corresponding to the electrical field; storing geometry data in the memory, the geometry data representing a geometric relationship between anatomy and a plurality of sensors used to detect the electric field; reconstructing electrical signals at an anatomical envelope for the tissue based on the geometry data and the sensed electrical signals; and analyzing the reconstructed electrical signals to determine a location where the localization signal was applied.