✦ LIBER ✦

Influence of magnetic resonance imaging on somatosensory and brain-stem auditory evoked potentials in man

✍ Scribed by G. Niemann; G. Schroth; U. Klose; U. W. Buettner

Publisher: Springer
Year: 1988
Tongue: English
Weight: 307 KB
Volume: 235
Category: Article
ISSN: 0340-5354
DOI: 10.1007/bf00314248

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✦ Synopsis

There is still a need to prove that even static magnetic fields up to 1.5 T used in magnetic resonance imaging (MRI) are biologically safe and harmless for humans. Recordings of median and ulnar nerves and brain-stem auditory evoked potentials in 20 patients were completed prior to and after MRI investigation of the central nervous system. Neither the somatosensory nor the auditory evoked potentials exhibited any significant change of latencies, interpeak latencies or amplitudes. Since these electrophysiological parameters are highly dependent on the quality of nerve conduction and integrity of information processing in various nuclei, it may be assumed that MRI causes no lasting changes in either respect.

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We studied 6 patients with adrenomyeloneuropathy (AMN) showing mild signs of central nervous system involvement. All patients underwent brain and spinal magnetic resonance imaging (MRI) and somatosensory (SEP) and motor (MEP) evoked potential study. Whereas SEPs and MEPs were abnormal in all patient