Herein is disclosed a magnetic resonance imaging antenna, including an inner conductor, an outer shield slideably displaceable with respect to the inner conductor, and an insulator electrically insulating the inner conductor from the outer shield. Herein is disclosed a biopsy needle antenna, including...http://www.google.se/patents/US7778682?utm_source=gb-gplus-sharePatent US7778682 - Biopsy and sampling needle antennas for magnetic resonance imaging-guided biopsies
