Heilmaier C, Mayor A, Zuber N, Fodor P, Weishaupt D
Department of Radiology and Nuclear Medicine, Stadtspital Triemli, Zurich, Switzerland.
Department of Anesthesiology and Intensive Care Medicine, Stadtspital Triemli, Zurich, Switzerland.
Rofo. 2016 Mar;188(3):280-7. doi: 10.1055/s-0041-110450. Epub 2016 Jan 27.
Non-radiological medical professionals often need to remain in the scanning room during computed tomography (CT) examinations to supervise patients in critical condition. Independent of protective devices, their position significantly influences the radiation dose they receive. The purpose of this study was to assess if a traffic light system indicating areas of different radiation exposure improves non-radiological medical staff's radiation awareness and feeling of personal security.
Phantom measurements were performed to define areas of different dose rates and colored stickers were applied on the floor according to a traffic light system: green = lowest, orange = intermediate, and red = highest possible radiation exposure. Non-radiological medical professionals with different years of working experience evaluated the system using a structured questionnaire. Kruskal-Wallis and Spearman's correlation test were applied for statistical analysis.
Fifty-six subjects (30 physicians, 26 nursing staff) took part in this prospective study. Overall rating of the system was very good, and almost all professionals tried to stand in the green stickers during the scan. The system significantly increased radiation awareness and feeling of personal protection particularly in staff with ≤ 5 years of working experience (p < 0.05). The majority of non-radiological medical professionals stated that staying in the green stickers and patient care would be compatible. Knowledge of radiation protection was poor in all groups, especially among entry-level employees (p < 0.05).
A traffic light system in the CT scanning room indicating areas with lowest, intermediate, and highest possible radiation exposure is much appreciated. It increases radiation awareness, improves the sense of personal radiation protection, and may support endeavors to lower occupational radiation exposure, although the best radiation protection always is to re-main outside the CT room during the scan.
• A traffic light system indicating areas with different radiation exposure within the computed tomography scanner room is much appreciated by non-radiological medical staff. • The traffic light system increases non-radiological medical staff's radiation awareness and feeling of personal protection. • Knowledge on radiation protection was poor in non-radiological medical staff, especially in those with few working experience.
在计算机断层扫描（CT）检查期间，非放射医学专业人员经常需要留在扫描室内以监护重症患者。无论防护设备如何，他们的位置会显著影响其接受的辐射剂量。本研究的目的是评估一种指示不同辐射暴露区域的交通信号灯系统是否能提高非放射医学工作人员的辐射意识和个人安全感。
进行体模测量以确定不同剂量率区域，并根据交通信号灯系统在地面贴上彩色贴纸：绿色 = 最低，橙色 = 中等，红色 = 最高可能辐射暴露。具有不同工作年限的非放射医学专业人员使用结构化问卷对该系统进行评估。采用Kruskal-Wallis检验和Spearman相关性检验进行统计分析。
56名受试者（30名医生，26名护理人员）参与了这项前瞻性研究。对该系统的总体评价非常好，几乎所有专业人员在扫描期间都试图站在绿色贴纸上。该系统显著提高了辐射意识和个人防护感，尤其是在工作年限≤5年的工作人员中（p < 0.05）。大多数非放射医学专业人员表示，待在绿色贴纸上与患者护理是相容的。所有组的辐射防护知识都很差，尤其是新入职员工（p < 0.05）。
CT扫描室中的交通信号灯系统指示最低、中等和最高可能辐射暴露区域，很受欢迎。它提高了辐射意识，增强了个人辐射防护感，并可能有助于降低职业辐射暴露，尽管最佳的辐射防护措施始终是在扫描期间留在CT室之外。
• 一种指示计算机断层扫描仪室内不同辐射暴露区域的交通信号灯系统受到非放射医学工作人员的高度评价。• 交通信号灯系统提高了非放射医学工作人员的辐射意识和个人防护感。• 非放射医学工作人员的辐射防护知识很差，尤其是工作经验少的人员。
