| Pilot study investigating the effect of the static magnetic field from a 9.4-T MRI on the vestibular system. | |
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MedLine Citation:
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PMID: 18469627 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To objectively evaluate workers' sensory symptoms and vestibular function after exposure to a strong, new generation 9.4-T Magnetic Resonance Imaging (MRI) scanner. METHOD: Six MRI employees underwent standardized electronystagmographic evaluation, postural testing, and caloric function at baseline evaluation, 30 minutes postexposure to 9.4 T static field and at a 3-month follow-up. RESULTS: All participants noted sensory symptoms after exposure. No overall deterioration in vestibular function was noted following 30-minute exposure or at a 3-month follow-up. A higher occurrence of tonic vestibular asymmetry, hyperreactive caloric responses, and spontaneous nystagmus was noted compared with that of the normal population. CONCLUSION: Workers exposed to the new, stronger MRIs experience sensory symptoms but it is unclear as yet whether long-term vestibular damage occurs. The higher rates of vestibular changes noted could argue for improved worker surveillance and exposure control. |
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Authors:
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Mita Patel; Robert A Williamsom; Samuel Dorevitch; Susan Buchanan |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of occupational and environmental medicine / American College of Occupational and Environmental Medicine Volume: 50 ISSN: 1536-5948 ISO Abbreviation: J. Occup. Environ. Med. Publication Date: 2008 May |
Date Detail:
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Created Date: 2008-05-12 Completed Date: 2008-11-18 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9504688 Medline TA: J Occup Environ Med Country: United States |
Other Details:
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Languages: eng Pagination: 576-83 Citation Subset: IM |
Affiliation:
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Division of Environmental and Occupational Health Sciences, Occupational Medicine Residency Training Program, University of Illinois, Chicago School of Public Health, Chicago, Illinois, USA. mitapatel77@yahoo.co.uk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Electromagnetic Fields / adverse effects* Follow-Up Studies Humans Magnetic Resonance Imaging / adverse effects* Male Middle Aged Nystagmus, Pathologic / etiology Occupational Exposure / adverse effects* Pilot Projects Questionnaires Vestibular Diseases / etiology*, physiopathology* Vestibular Function Tests |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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