A description is given of a catheter for use during examination of an object by means of a magnetic resonance (MR) imaging apparatus. Also described is a method of forming an MR image and of visualizing in the MR image a position of the catheter (10) introduced into an object to be examined and also...http://www.google.co.uk/patents/US20030135110?utm_source=gb-gplus-sharePatent US20030135110 - Catheter for use in a magnetic resonance imaging apparatus
