Apparatus for mapping a surface of a cavity within a body of a subject includes an elongate probe, having a longitudinal axis and including a distal portion adapted for insertion into the cavity. A primary acoustic transducer on the distal portion of the probe is adapted to emit acoustic waves while...http://www.google.fr/patents/US6773402?utm_source=gb-gplus-shareBrevet US6773402 - Location sensing with real-time ultrasound imaging
Location sensing with real-time ultrasound imaging
