| Exposure to high-field MRI does not affect cognitive function. | |
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MedLine Citation:
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PMID: 20432339 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: To assess potential cognitive deficits under the influence of static magnetic fields at various field strengths some studies already exist. These studies were not focused on attention as the most vulnerable cognitive function. Additionally, mostly no magnetic resonance imaging (MRI) sequences were performed. MATERIALS AND METHODS: In all, 25 right-handed men were enrolled in this study. All subjects underwent one MRI examination of 63 minutes at 1.5 T and one at 7 T within an interval of 10 to 30 days. The order of the examinations was randomized. Subjects were referred to six standardized neuropsychological tests strictly focused on attention immediately before and after each MRI examination. Differences in neuropsychological variables between the timepoints before and after each MRI examination were assessed and P-values were calculated RESULTS: Only six subtests revealed significant differences between pre- and post-MRI. In these tests the subjects achieved better results in post-MRI testing than in pre-MRI testing (P = 0.013-0.032). The other tests revealed no significant results. CONCLUSION: The improvement in post-MRI testing is only explicable as a result of learning effects. MRI examinations, even in ultrahigh-field scanners, do not seem to have any persisting influence on the attention networks of human cognition immediately after exposure. |
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Authors:
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Marc Schlamann; Melanie A Voigt; Stefan Maderwald; Andreas K Bitz; Oliver Kraff; Susanne C Ladd; Mark E Ladd; Michael Forsting; Hans Wilhelm |
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Publication Detail:
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Type: Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of magnetic resonance imaging : JMRI Volume: 31 ISSN: 1522-2586 ISO Abbreviation: J Magn Reson Imaging Publication Date: 2010 May |
Date Detail:
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Created Date: 2010-04-30 Completed Date: 2010-08-04 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9105850 Medline TA: J Magn Reson Imaging Country: United States |
Other Details:
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Languages: eng Pagination: 1061-6 Citation Subset: IM |
Copyright Information:
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Copyright 2010 Wiley-Liss, Inc. |
Affiliation:
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Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Germany. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Cognition / physiology*, radiation effects* Electromagnetic Fields Humans Magnetic Resonance Imaging* Male Middle Aged Radiation Dosage |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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