Journal
JOURNAL OF MAGNETIC RESONANCE IMAGING
Volume 26, Issue 5, Pages 1222-1227Publisher
WILEY
DOI: 10.1002/jmri.21150
Keywords
MRI safety; ultra-high field MRI; static magnetic field; human vital digns; cognitive function; sodium imaging
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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 U.S. Food and Drug Adminstration (FDA). Results: Exposture 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.
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