The present invention is a device localization system that uses one or more ultrasound reference catheters to establish a fixed three-dimensional coordinate system within a patient's heart using principles of triangulation. The coordinate system is represented graphically in three-dimensions on a video...http://www.google.fr/patents/US6490474?utm_source=gb-gplus-shareBrevet US6490474 - System and method for electrode localization using ultrasound
System and method for electrode localization using ultrasound