Subject tolerance of 7 T MRI examinations
Article first published online: 13 NOV 2012
Copyright © 2013 Wiley Periodicals, Inc., a Wiley company
Journal of Magnetic Resonance Imaging
Volume 38, Issue 3, pages 722–725, September 2013
How to Cite
Versluis, M. J., Teeuwisse, W. M., Kan, H. E., van Buchem, M. A., Webb, A. G. and van Osch, M. J. (2013), Subject tolerance of 7 T MRI examinations. J. Magn. Reson. Imaging, 38: 722–725. doi: 10.1002/jmri.23904
- Issue published online: 30 AUG 2013
- Article first published online: 13 NOV 2012
- Manuscript Accepted: 25 SEP 2012
- Manuscript Received: 16 APR 2012
- magnetic resonance imaging;
- 7 T;
- high field;
- subject acceptance;
- side effects
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.
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.
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.