Subject tolerance of 7 T MRI examinations

Purpose: To determine the subjective experiences and the sources of discomfort for subjects undergoing 7 T magnetic resonance imaging (MRI) examinations on a whole‐body 7 T system in a hospital setting Materials and Methods: A postscan survey was filled out by 101 healthy subjects who participated i...

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Bibliographic Details
Published in:Journal of magnetic resonance imaging 2013-09, Vol.38 (3), p.722-725
Main Authors: Versluis, Maarten J., Teeuwisse, Wouter M., Kan, Hermien E., van Buchem, Mark A., Webb, Andrew G., van Osch, Matthias J.
Format: Article
Language:English
Subjects:
7 T
Adolescent
Adult
Causality
Comorbidity
Dizziness - psychology
Female
high field
Humans
Magnetic resonance imaging
Magnetic Resonance Imaging - psychology
Magnetic Resonance Imaging - statistics & numerical data
Male
Middle Aged
Netherlands - epidemiology
Patient Satisfaction - statistics & numerical data
Phobic Disorders - epidemiology
Phobic Disorders - psychology
Prevalence
Risk Factors
Sensation Disorders - epidemiology
Sensation Disorders - psychology
side effects
Stress, Psychological - epidemiology
Stress, Psychological - psychology
subject acceptance
Young Adult
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Summary:Purpose: To determine the subjective experiences and the sources of discomfort for subjects undergoing 7 T magnetic resonance imaging (MRI) examinations on a whole‐body 7 T system in a hospital setting Materials and Methods: A postscan survey was filled out by 101 healthy subjects who participated in a 7 T examination. All participants answered questions regarding different potential sensations of discomfort including dizziness, claustrophobia, and scanner noise. Results: Dizziness was reported most frequently, with 34% of subjects experiencing dizziness while moving into the scanner and 30% while moving out of the magnet. Scanner noise was also frequently mentioned as uncomfortable (33% of the subjects). In 11% of the cases a metallic taste was reported. The overall experience was rated by 3% as unpleasant, 51% as neutral, and 46% as pleasant. Conclusion: The reported side effects are larger than previously reported for lower field strengths. However, overall, 7 T examinations are well tolerated, with only 3% of subjects rating it as unpleasant. These results agree well with previous in‐depth studies, and provide further evidence that 7 T MRI would be accepted by patients in clinical practice. J. Magn. Reson. Imaging 2013;38:722–725. © 2012 Wiley Periodicals, Inc.
ISSN:1053-1807
1522-2586
DOI:10.1002/jmri.23904