Christchurch Hospital, Christchurch, New Zealand.
Olivia Newton-John Cancer Wellness and Research Centre, Heidelberg, VIC, Australia.
Phys Eng Sci Med. 2023 Mar;46(1):19-43. doi: 10.1007/s13246-023-01224-9. Epub 2023 Feb 27.
Magnetic Resonance Imaging linear-accelerator (MRI-linac) equipment has recently been introduced to multiple centres in Australia and New Zealand. MRI equipment creates hazards for staff, patients and others in the MR environment; these hazards must be well understood, and risks managed by a system of environmental controls, written procedures and a trained workforce. While MRI-linac hazards are similar to the diagnostic paradigm, the equipment, workforce and environment are sufficiently different that additional safety guidance is warranted. In 2019 the Australasian College of Physical Scientists and Engineers in Medicine (ACPSEM) formed the Magnetic Resonance Imaging Linear-Accelerator Working Group (MRILWG) to support the safe clinical introduction and optimal use of MR-guided radiation therapy treatment units. This Position Paper is intended to provide safety guidance and education for Medical Physicists and others planning for and working with MRI-linac technology. This document summarises MRI-linac hazards and describes particular effects which arise from the combination of strong magnetic fields with an external radiation treatment beam. This document also provides guidance on safety governance and training, and recommends a system of hazard management tailored to the MRI-linac environment, ancillary equipment, and workforce.
磁共振引导直线加速器（MRI-linac）设备最近已在澳大利亚和新西兰的多个中心推出。磁共振设备会给磁共振环境中的工作人员、患者和其他人员带来危害；这些危害必须得到充分理解，并通过环境控制、书面程序和经过培训的劳动力系统来管理风险。虽然 MRI-linac 的危害与诊断模式相似，但设备、劳动力和环境有很大的不同，因此需要额外的安全指导。2019 年，澳大利亚和新西兰物理科学家与工程师学会医学分会（ACPSEM）成立了磁共振引导直线加速器工作组（MRILWG），以支持磁共振引导放射治疗设备的安全临床引入和最佳使用。本立场文件旨在为计划使用 MRI-linac 技术的医学物理学家和其他人员提供安全指导和教育。本文总结了 MRI-linac 的危害，并描述了强磁场与外部放射治疗束结合产生的特殊影响。本文还就安全治理和培训提供了指导，并建议针对 MRI-linac 环境、辅助设备和劳动力制定危害管理系统。
