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Safety of human MRI at static fields above the FDA 8T guideline: Sodium imaging at 9.4T does not affect vital signs or cognitive ability.

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posted on 2011-01-24, 00:00 authored by Ian C. Atkinson, Laura Renteria, Holly Burd, Neil H. Pliskin, Keith R. Thulborn
Purpose: To assess whether exposure to a 9.4T static magnetic field during sodium imaging at 105.92 MHz affects human vital signs and cognitive function. Materials and Methods: Measurements of human vital signs and cognitive ability made before and after exposure to a 9.4T MR scanner and a mock scanner with no magnetic field are compared using a protocol approved by the United States Food and Drug Administration. Results: Exposure to a 9.4T static magnetic field during sodium imaging did not result in a statistically significant change in the vital signs or cognitive ability of healthy normal volunteers. Conclusion: Vital sign and cognitive ability measurements made before and after sodium imaging at 9.4T suggest that performing human MRI at 105.92 MHz in a 9.4T static magnetic field does not pose a health risk.


University of Illinois at Chicago and the State of Illinois Venture Capital Fund


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Postprint version of article may differ from published version. The definitive version is available at DOI: 10.1002/jmri.21150







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