A method of determining cardiac volume including the steps of positioning a catheter in a blood-filled chamber of a patient's heart. The catheter comprises an elongated body having a distal end, a proximal end, a plurality of spaced electrodes arrayed on the outer surface of the catheter and spaced apart...http://www.google.es/patents/US5971933?utm_source=gb-gplus-sharePatente US5971933 - Method and apparatus to correct for electric field non-uniformity in conductance catheter volumetry
Method and apparatus to correct for electric field non-uniformity in ...