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Short‐term effects experienced during examinations in an actively shielded 7 T MR
Author(s) -
Hansson Boel,
Höglund Peter,
Markenroth Bloch Karin,
Nilsson Markus,
Olsrud Johan,
Wilén Jonna,
BjörkmanBurtscher Isabella M.
Publication year - 2019
Publication title -
bioelectromagnetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.435
H-Index - 81
eISSN - 1521-186X
pISSN - 0197-8462
DOI - 10.1002/bem.22189
Subject(s) - shielded cable , term (time) , medicine , nuclear medicine , physics , engineering , astronomy , electrical engineering
The objective of this study was to evaluate occurrence and strength of short‐term effects experienced by study participants in an actively shielded (AS) 7 tesla (7 T) magnetic resonance (MR) scanner, to compare results with earlier reports on passively shielded (PS) 7 T MR scanners, and to outline possible healthcare strategies to improve patient compliance. Study participants ( n = 124) completed a web‐based questionnaire directly after being examined in an AS 7 T MR ( n = 154 examinations). Most frequently experienced short‐term effects were dizziness (84%) and inconsistent movement (70%), especially while moving into or out of the magnet. Peripheral nerve stimulation (PNS)—twitching—was experienced in 67% of research examinations and showed a dependence between strength of twitches and recorded predicted PNS values. Of the participants, 74% experienced noise levels as acceptable and the majority experienced body and room temperature as comfortable. Of the study participants, 95% felt well‐informed and felt they had had good contact with the staff before the examination. Willingness to undergo a future 7 T examination was high (>90%). Our study concludes s hort‐term effects are often experienced during examinations in an AS 7 T MR, leaving room for improvement in nursing care strategies to increase patient compliance. Bioelectromagnetics. 2019;9999:XX–XX. © 2019 The Authors. Bioelectromagnetics Published by Wiley Periodicals, Inc.