Safety considerations of 7-T MRI in clinical practice

Michael N. Hoff, Alexander McKinney, Frank G. Shellock, Ulrich Rassner, Tobias Gilk, Robert E. Watson, Todd D. Greenberg, Jerry Froelich, Emanuel Kanal

Research output: Contribution to journalReview articlepeer-review

50 Scopus citations


Although 7-T MRI has recently received approval for use in clinical patient care, there are distinct safety issues associated with this relatively high magnetic field. Forces on metallic implants and radiofrequency power deposition and heating are safety considerations at 7 T. Patient bioeffects such as vertigo, dizziness, false feelings of motion, nausea, nystagmus, magnetophosphenes, and electrogustatory effects are more common and potentially more pronounced at 7 T than at lower field strengths. Herein the authors review safety issues associated with 7-T MRI. The rationale for safety concerns at this field strength are discussed as well as potential approaches to mitigate risk to patients and health care professionals.

Original languageEnglish (US)
Pages (from-to)509-518
Number of pages10
Issue number3
StatePublished - 2019

Bibliographical note

Publisher Copyright:
© RSNA, 2019.


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