A stethoscope for use with nuclear magnetic resonance (NMR) screenings in order to supervise a patient, including a bell chest piece adapted to pick up audible heart and breathing sounds or other bodily sounds from the patient, a flexible hollow tube connected at one end thereof to the bell chest piece...http://www.google.de/patents/US5022405?utm_source=gb-gplus-sharePatent US5022405 - Stethoscope for use in nuclear magnetic resonance diagnostics
