New skeletal dose coefficients of the ICRP-110 reference phantoms for idealized external fields to photons and neutrons using dose response functions (DRFs)

신방호; 이유미; 최지원; 이수민; 최현준; 염연수

doi:10.1016/j.net.2023.03.015

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자료유형: 학술저널

저자정보: 신방호 (한양대학교) 이유미 (연세대학교) 최지원 (연세대학교) 이수민 (연세대학교(미래캠퍼스)) 최현준 (연세대학교) 염연수 (연세대학교)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제55권 제6호

발행연도: 2023.6

수록면: 1,949 - 1,958 (10page)

DOI: 10.1016/j.net.2023.03.015

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The International Commission on Radiological Protection (ICRP) Publication 116 was released to provide a comprehensive dataset of the dose coefficients (DCs) for external exposures produced with the adult reference voxel phantoms of ICRP Publication 110. Although an advanced skeletal dosimetry method for photons and neutrons using fluence-to-dose response functions (DRFs) was introduced in ICRP Publi cation 116, the ICRP-116 skeletal DCs were calculated by using the simple method conventionally used (i.e., doses to red bone marrow and endosteum approximated by doses to spongiosa and/or medullary cavities). In the present study, the photon and neutron DRFs were used to produce skeletal DCs of the ICRP-110 reference phantoms, which were then compared with the ICRP-116 DCs. For photons, there were significant differences by up to ~2.8 times especially at energies <0.3 MeV. For neutrons, the dif ferences were generally small over the entire energy region (mostly <20%). The general impact of the DRF-based skeletal DCs on the effective dose calculations was negligibly small, supporting the validity of the ICRP-116 effective DCs despite their skeletal DCs derived from the simple method. Meanwhile, we believe that the DRF-based skeletal DCs could be beneficial in better estimates of skeletal doses of in dividuals for risk assessment

#ICRP reference Phantom #Skeletal dosimetry #Dose coefficients #Fluence-to-dose response functions #Monte Carlo simulation

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