A method is provided, the method comprising detecting a magnetic resonance imaging (MRI) interference signal and enabling at least one preventive measure to protect an implantable medical device from interference by the magnetic resonance imaging (MRI) interference signal. The method also comprises switching...http://www.google.co.uk/patents/US7076283?utm_source=gb-gplus-sharePatent US7076283 - Device for sensing cardiac activity in an implantable medical device in the presence of magnetic resonance imaging interference
