{"title":"Development of a Physical Phantom for Occupational Eye Lens Dosimetry in a Non-homogeneous Radiation Field.","authors":"Jeongin Kim, Hyunjun Na, Seonghoon Cho, Seokon Kang, Yunmi Baek, Seungjin Choi","doi":"10.1097/HP.0000000000002030","DOIUrl":null,"url":null,"abstract":"<p><strong>Abstract: </strong>Following the reduction in the occupational eye lens dose limit by the International Commission on Radiological Protection (ICRP), a physical phantom was developed to enable lens dose monitoring in complex radiation environments. The design is based on a validated eye model used to derive lens dose conversion coefficients. After evaluating various materials using Monte Carlo simulations, polymethyl methacrylate (PMMA) was selected for its ease of manufacturing and decontamination. The phantom's dose conversion coefficients were calculated for a range of photon energies and irradiation angles. Lens doses were measured using thermoluminescent dosimeter (TLD) chips embedded in the phantom and exposed to a 137Cs reference field. Measurements were compared with simulation results, demonstrating good agreement. This newly developed PMMA phantom offers a practical solution for evaluating lens dose in non-uniform radiation fields such as those found in nuclear power plants.</p>","PeriodicalId":12976,"journal":{"name":"Health physics","volume":" ","pages":""},"PeriodicalIF":1.4000,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Health physics","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1097/HP.0000000000002030","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Abstract: Following the reduction in the occupational eye lens dose limit by the International Commission on Radiological Protection (ICRP), a physical phantom was developed to enable lens dose monitoring in complex radiation environments. The design is based on a validated eye model used to derive lens dose conversion coefficients. After evaluating various materials using Monte Carlo simulations, polymethyl methacrylate (PMMA) was selected for its ease of manufacturing and decontamination. The phantom's dose conversion coefficients were calculated for a range of photon energies and irradiation angles. Lens doses were measured using thermoluminescent dosimeter (TLD) chips embedded in the phantom and exposed to a 137Cs reference field. Measurements were compared with simulation results, demonstrating good agreement. This newly developed PMMA phantom offers a practical solution for evaluating lens dose in non-uniform radiation fields such as those found in nuclear power plants.
期刊介绍：
Health Physics, first published in 1958, provides the latest research to a wide variety of radiation safety professionals including health physicists, nuclear chemists, medical physicists, and radiation safety officers with interests in nuclear and radiation science. The Journal allows professionals in these and other disciplines in science and engineering to stay on the cutting edge of scientific and technological advances in the field of radiation safety. The Journal publishes original papers, technical notes, articles on advances in practical applications, editorials, and correspondence. Journal articles report on the latest findings in theoretical, practical, and applied disciplines of epidemiology and radiation effects, radiation biology and radiation science, radiation ecology, and related fields.
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