[Effect of in vivo nuclear magnetic resonance tomography on somatosensory and visual evoked potentials in the human].

By means of registration of somatosensory (SSEP) and visual (VEP) evoked potentials under the influence of different magnetic and electromagnetic fields of Magnetic Resonance we investigated the influence of Magnetic Resonance Imaging (MRI) on human nervous system (all measurements with an 1.0 T MR imager are performed outside and inside the static magnetic field, before and after MR imaging). In vivo experiments on 20 healthy volunteers show in SSEP registrations as well as in VEP-registrations no measurable influence on nerve conduction. The measured latencies before and after MR imaging are found inside the standard values which are valid for healthy volunteers. In vivo experiments at field-strengthens up to 1.0 Tesla show no significant changes of the central and peripheral conduction velocity with human beings.