显示曝光指数在 IEC 标准框架中作为数字放射系统剂量优化工具的可行性。
FEASIBILITY OF DISPLAYED EXPOSURE INDEX IN IEC STANDARD FRAMEWORK AS A DOSE OPTIMISATION TOOL FOR DIGITAL RADIOGRAPHY SYSTEMS.
机构信息
Department of Health and Safety Convergence Science, Korea University, Seoul, Republic of Korea.
Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan.
出版信息
Radiat Prot Dosimetry. 2020 Jul 17;189(3):384-394. doi: 10.1093/rpd/ncaa052.
International Electrotechnical Commission (IEC) established the framework for the use of exposure index (EI) for evaluating the exposure conditions with various digital systems. In this study, we investigated the feasibility of EI, as per the IEC, by comparing the EIs obtained through manual calculated and that displayed on the console of two computed radiography (CR) and digital radiography (DR) systems with radiation beam qualities of RQA3,5,7 and 9. As a result, both two systems indicated an uncertainty of less than 20% for both calculated and displayed EI with all beam qualities except displayed EI obtained by RQA3. However, the displayed EI values were different even under the same exposure conditions because of the characteristics of the imaging receptor materials, such as BaFI or CsI, of two systems. Therefore, when an operator attempts to introduce displayed EI for managing radiation dose, it is essential to understand the characteristics of the digital system.
国际电工委员会（IEC）为评估各种数字系统的照射条件，制定了使用照射指数（EI）的框架。本研究通过比较两种计算机 X 射线摄影（CR）和数字 X 射线摄影（DR）系统控制台显示的 EI 与通过手动计算得出的 EI，来验证 IEC 中 EI 的可行性，这些系统的射线质分别为 RQA3、5、7 和 9。结果表明，除 RQA3 外，两种系统在所有射线质下，计算和显示 EI 的不确定度均小于 20%。然而，由于两种系统的成像受体材料（如 BaFI 或 CsI）的特性，即使在相同的照射条件下，显示的 EI 值也会有所不同。因此，当操作人员试图引入显示 EI 来管理辐射剂量时，必须了解数字系统的特性。
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