Ghazizadeh Mehdi, Deevband Mohammad Reza, Kardan Mohammad Reza, Tavakoli Meysam
Department of Medical Physics and Biomedical Engineering, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, No. 24, Aarabi St, Yaman St, Velenjak, P.O. Box: 19395-4763, Tehran, 1985717413, Iran.
Safety Research Institute Nuclear Science and Technology Research Institute Tehran, Tehran, 1439955933, Iran.
Radiat Prot Dosimetry. 2025 Apr 22;201(6):432-440. doi: 10.1093/rpd/ncaf030.
Although ionizing radiation plays a key role in both diagnosis and treatment, it brings potential risks, including incidence of cancer. Diagnostic Reference Level (DRL) is described as a tool to optimize the protection in the medical exposure for diagnostic procedures. The objective of this study is to propose a new method to calculate DRL by reviewing a series of articles which are published on the DRL in radiography.
The study analyzed 16 articles in the last ten years including published data on National and Local DRLs. The weighted mean method was used to propose unique quantities such as the entrance skin dose (ESD) or Entrance Surface Air Kerma (ESAK), and dose area product (DAP) as national DRL.
The results showed that there were differences in dose values among diagnostic radiology centers for different examinations. The study provides valuable information to calculate national DRL.
The weighted mean of the ESD or ESAK and DAP values has been proposed as a new method for calculating national DRL values, which is considered the significant difference in statistical population and number of articles.
尽管电离辐射在诊断和治疗中都起着关键作用，但它也带来了潜在风险，包括癌症发病率。诊断参考水平（DRL）被描述为一种在诊断程序的医疗照射中优化防护的工具。本研究的目的是通过回顾一系列发表在射线照相术DRL方面的文章，提出一种计算DRL的新方法。
该研究分析了过去十年中的16篇文章，包括国家和地方DRL的已发表数据。采用加权平均法提出了诸如入射皮肤剂量（ESD）或入射表面空气比释动能（ESAK）以及剂量面积乘积（DAP）等独特量值作为国家DRL。
结果表明，不同检查的诊断放射学中心之间的剂量值存在差异。该研究为计算国家DRL提供了有价值的信息。
已提出将ESD或ESAK与DAP值的加权平均值作为计算国家DRL值的新方法，这在统计总体和文章数量方面被认为存在显著差异。
