Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku Fukuoka-shi, Fukuoka 812-8582, Japan.
J Radiol Prot. 2021 Sep 27;41(4). doi: 10.1088/1361-6498/ac16b1.
When working in radiology and patient assistance in medical facilities, radiation workers need to understand how to properly protect themselves and others from scattered radiation. In this study, a visualisation method is examined to facilitate the understanding of the spread of scattered radiation in radiography, computerised tomography (CT), and angiography rooms, and the application of this system for radiation protection education is proposed. X-ray radiography, x-ray CT, and angiography rooms were constructed using the particle and heavy ion transport code system, and the scattered radiation distributions that occurred when a patient was irradiated with x-rays were simulated. The three-dimensional (3D) distribution of each moment was continuously displayed to create a four-dimensional (4D) distribution. Using the obtained data, a radiation protection education seminar was conducted that included exercises to allow the students to confirm the presence of scattered radiation from any direction. The effectiveness of the scattered radiation visualisation data was evaluated using an interview. The position of the assistant for conducting standing chest radiographs that experienced the least scattered radiation was determined to be at the side and foot side of the patient. As a result of an interview that was provided to the participants following the seminar, the effectiveness of this system for providing education about radiation protection was confirmed. The visualisation method allowed the students to better understand the behaviour of radiation and the sources of scattered radiation. The visualisation of 3D and 4D scattered radiation distributions in radiological examination rooms can intuitively enhance the understanding of the spread of invisible radiation and the appropriate methods of mitigating radiation exposure.
当在医疗设施中从事放射学和患者辅助工作时，放射工作人员需要了解如何正确保护自己和他人免受散射辐射的伤害。在这项研究中，检查了一种可视化方法，以促进理解放射摄影、计算机断层扫描 (CT) 和血管造影室中散射辐射的传播，以及提出了该系统在辐射防护教育中的应用。使用粒子和重离子输运代码系统构建了 X 射线放射摄影、X 射线 CT 和血管造影室，并模拟了对患者进行 X 射线照射时发生的散射辐射分布。连续显示每个时刻的三维 (3D) 分布，以创建四维 (4D) 分布。使用获得的数据，举办了辐射防护教育研讨会，包括练习，使学生能够从任何方向确认散射辐射的存在。通过访谈评估散射辐射可视化数据的有效性。确定进行站立胸部 X 光检查的助手所处的位置是在患者的侧面和脚侧，那里受到的散射辐射最少。研讨会结束后，向参与者提供了访谈，确认了该系统在辐射防护教育方面的有效性。该可视化方法使学生能够更好地理解辐射的行为和散射辐射的来源。在放射科检查室中可视化 3D 和 4D 散射辐射分布可以直观地增强对无形辐射传播的理解，以及减轻辐射暴露的适当方法。
