Department of Radiology, Mayo Clinic, 200 First Street Southwest, Rochester, MN 55905, USA.
Department of Radiology, Mayo Clinic, 200 First Street Southwest, Rochester, MN 55905, USA.
Magn Reson Imaging Clin N Am. 2020 Nov;28(4):573-582. doi: 10.1016/j.mric.2020.07.002. Epub 2020 Sep 17.
The arrival of 7T MR imaging into the clinic represents a significant step-change in MR technology. This article describes safety concerns associated with imaging at 7T, including the increased magnetic forces on magnetic objects at 7T and the interaction of the 300 MHz (Larmor) radiofrequency energy with tissue in the body. A dedicated multidisciplinary 7T Safety team should develop safety policies and procedures to address these safety challenges and keep abreast of best practice in the field. The off-label imaging of implanted devices is discussed, and also the need for staff training to deal with complexities of patient handling and image interpretation.
7T 磁共振成像进入临床代表了磁共振技术的重大变革。本文描述了与 7T 成像相关的安全问题，包括在 7T 时磁体对磁性物体的吸引力增加，以及 300MHz（拉莫尔）射频能量与体内组织的相互作用。一个专门的多学科 7T 安全团队应该制定安全政策和程序来解决这些安全挑战，并紧跟该领域的最佳实践。本文还讨论了植入设备的超适应证成像，以及对员工进行培训以处理患者处理和图像解释复杂性的需求。
