A system for magnetically imaging an operating region in a subject and magnetically navigating a medical device within the operating region includes a first magnet for applying a static magnetic field to the operating region of sufficient strength for magnetically imaging the operating region and sufficiently...http://www.google.com.au/patents/US20050182315?utm_source=gb-gplus-sharePatent US20050182315 - Magnetic resonance imaging and magnetic navigation systems and methods
