临床实践中 7-T MRI 的安全性考虑。
Safety Considerations of 7-T MRI in Clinical Practice.
机构信息
From the Department of Radiology, University of Washington, 1959 NE Pacific St, Seattle, WA 98195-7117 (M.N.H.); Department of Radiology, University of Minnesota, Minneapolis, Minn (A.M., J.F.); Department of Clinical Physical Therapy, University of Southern California, Los Angeles, Calif (F.G.S.); Department of Radiology, University of Utah Health Sciences Center, Salt Lake City, Utah (U.R.); RADIOLOGY-Planning, Kansas City, Mo (T.G.); Department of Radiology, Mayo Clinic, Rochester, Minn (R.E.W.); G3 Global Group, Boulder, Colo, Mo (T.D.G.); and Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (E.K.).
出版信息
Radiology. 2019 Sep;292(3):509-518. doi: 10.1148/radiol.2019182742. Epub 2019 Jul 16.
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.
虽然 7-T MRI 最近已获得批准用于临床患者护理，但与这个相对较高的磁场相关联的有明显的安全问题。在 7 T 时，金属植入物的力以及射频功率沉积和加热是安全考虑因素。在 7 T 时，患者的生物效应（如眩晕、头晕、虚假的运动感觉、恶心、眼球震颤、磁幻视和味觉电效应）比在较低场强时更常见，并且潜在地更明显。本文作者回顾了与 7-T MRI 相关的安全问题。讨论了在此场强下引起安全问题的基本原理，以及减轻患者和医疗保健专业人员风险的潜在方法。
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