MAGNETIC SENSING TO PROVIDE GEOMETRY INFORMATION

摘要

An example method includes storing invasive position data representing different positions of one or more sensors in a given coordinate system within a volume defined by an electromagnetic field and storing non-invasive position data representing different positions of a plurality of control points in the given coordinate system determined from a position of one or more sensors. The method also includes computing internal geometry data based on the invasive position data, the internal geometry data representing a three-dimensional anatomical surface within a patient's body. The method also includes computing electrode geometry data based on the non-invasive position data, the electrode geometry data representing a location of each of a plurality of electrodes on an outer surface of the patient's body. Electrical activity sensed by the plurality of electrodes can be reconstructed onto an anatomical envelope within the patient's body.

主权项

1. A system comprising:
an electromagnetic spatial measurement apparatus comprising:
a moveable sensor to provide a sensor signal in response to an electromagnetic field, the measurement apparatus providing first position data representing multiple positions of the moveable sensor in a given coordinate system;a plurality of stationary sensors that each provides respective sensor signals in response to the electromagnetic field, the measurement apparatus providing second position data based on a position of each of the plurality of sensors in the given coordinate system; a processor configured to:
compute internal geometry data based on the first position data, the internal geometry data representing a plurality of locations in a three-dimensional space distributed across an anatomical surface within a patient's body;compute electrode geometry data based on the second position data, the electrode geometry data representing the location of each of a plurality of electrodes on an outer surface of the patient's body.