title: A simple fiber optic monitor of cardiac and respiratory activity for biomedical magnetic resonance applications.
abstract: A fiber optic reflectometer, capable of monitoring physiological parameters in a high magnetic field without significant disturbance of either rf or static fields, is described. Both cardiac and respiration rates were monitored with this optical device while 31P NMR spectra of the liver of an anesthetized rat were acquired.
mesh_terms: D000818:Animals; D002415:Cats; D005336:Fiber Optic Technology; D006339:Heart Rate; D009682:Magnetic Resonance Spectroscopy / Q000295:instrumentation*; D008991:Monitoring, Physiologic / Q000295:instrumentation* / Q000379:methods; D055096:Optical Devices; D055100:Optical Fibers; D051381:Rats; D012119:Respiration