Park Hyemin, Yoon Yongsu, Kim Jungmin, Kim Jungsu, Jeong Hoiwoun, Tanaka Nobukazu, Morishita Junji
Department of Health and Safety Convergence Science, Korea University, Seoul, South Korea.
Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan.
Radiat Prot Dosimetry. 2020 Nov 17. doi: 10.1093/rpd/ncaa185.
The International Electrotechnical Commission introduced the concepts of exposure index (EI), target exposure index (EIT) and deviation index (DI) to manage and optimize patient dose in real time. In this study, we have proposed an appropriate method for setting the EIT based on the Korean national diagnostic reference levels (DRLs). Furthermore, we evaluated the use of clinical EI, EIT and DI as tools for patient dose optimization in clinical environments by observing the changes in DI with those in EIT. According to the Korean national exposure conditions, we conducted experiments on three representative radiographic examinations (chest posterior-anterior, lateral and abdomen anterior-posterior) of clinical environments. As the exposure conditions and DRLs varied, the clinical EI, EIT and DI also varied. These results reveal that the clinical EI, EIT and DI can be used as tools for optimizing the patient dose if EIT is periodically and properly updated.
国际电工委员会引入了曝光指数（EI）、目标曝光指数（EIT）和偏差指数（DI）的概念，以实时管理和优化患者剂量。在本研究中，我们提出了一种基于韩国国家诊断参考水平（DRL）设置EIT的适当方法。此外，我们通过观察DI随EIT的变化，评估了临床EI、EIT和DI作为临床环境中患者剂量优化工具的使用情况。根据韩国国家曝光条件，我们对临床环境中的三种代表性放射检查（胸部后前位、侧位和腹部前后位）进行了实验。随着曝光条件和DRL的变化，临床EI、EIT和DI也发生了变化。这些结果表明，如果定期并适当地更新EIT，临床EI、EIT和DI可作为优化患者剂量的工具。
