在PET/CT检查中优化辐射保护:减少患者定位期间的职业暴露
Keisuke Nagamoto1, Nobuyoshi Yoshizuka2, Shoji Kawano2
1Department of Radiobiology and Hygiene Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, JPN.
卫生保健工作者在正子发射断层扫描/计算机断层扫描 (PET/CT) 扫描期间面临辐射暴露,主要是在患者定位期间. 通过操作员控制台进行远程定位可以显著降低这种职业剂量,提高安全性.
科学领域:
- 医学成像和放射瘤学医学成像和放射瘤学
- 医疗保健中的职业健康和安全.
背景情况:
- 在正子发射断层扫描/计算机断层扫描 (PET/CT) 部门的医疗保健工作人员受到职业辐射暴露.
- 患者的位置被确定为关键阶段,有助于辐射剂量积累.
- 评估和实施有效的辐射保护措施对于最小化风险至关重要.
研究的目的:
- 评估在PET/CT检查期间医护人员的职业辐射暴露水平.
- 为了研究患者定位对辐射剂量的影响.
- 评估不同辐射保护策略的有效性,包括保护屏幕和远程定位.
主要方法:
- 13名医疗保健工作者 (医生,放射技术专家,护士) 参加了86名患者的PET/CT检查.
- 使用实时半导体剂量计测量了职业剂量 (Hp(10).
- 评估的辐射保护措施包括增加人员,保护屏幕和通过操作员控制台远程定位患者.
主要成果:
- 患者定位和出院的任务产生了最高的职业暴露 (中位数Hp(10) 0.66 μSv).
- 一个保护屏幕减少了暴露于0.58μSv的中位数Hp(10) 的暴露.
- 通过操作员控制台的远程定位显著降低了0.49μSv (35.5%的剂量减少) 的中位数Hp(10) 的暴露,也减少了工作时间.
结论:
- 患者的位置是PET/CT手术中职业辐射暴露的主要原因.
- 通过操作员控制台远程定位患者提供了一种显著的,具有成本效益的,易于实施的方法来减少辐射暴露.
- 该战略符合"尽可能低的合理可行性" (ALARP) 原则,提高职业安全和运营效率.
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