Neurobehavioral effects among subjects exposed to high static and gradient magnetic fields from a 1.5 Tesla magnetic resonance imaging system--a case-crossover pilot study.
The interactive use of magnetic resonance imaging (MRI) techniques is increasing in operating theaters. A study was performed on 17 male company volunteers to assess the neurobehavioral effects of exposure to magnetic fields from a 1.5 Tesla MRI system. The subjects' neurobehavioral performances on a neurobehavioral test battery were compared in four 1-hr sessions with and without exposure to magnetic fields, and with and without additional movements. Adverse effects were found for hand coordination (-4%, P < 0.05; Pursuit Aiming II) and near visual contrast sensitivity (-16% and -15%, P < 0.10; Vistech 6000). The results from the remaining tests were inconclusive due to a strong learning effect. No additional effect from gradient fields was detected. The results indicate that working near a 1.5 Tesla MRI system may lead to neurobehavioral effects. Further research is recommended, especially in members of operating teams using interactive MRI systems.
de Vocht
Frank
F
Environmental and Occupational Health Division, Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands.
van-Wendel-de-Joode
Berna
B
Engels
Hans
H
Kromhout
Hans
H
D000328:Adult; D002490:Central Nervous System / Q000502:physiology*; D015350:Contrast Sensitivity; D018592:Cross-Over Studies; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation; D008280:Magnetics; D008297:Male; D009048:Motor Skills; D009483:Neuropsychological Tests; D016273:Occupational Exposure; D009873:Operating Rooms