Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Pediatric phantom library constructed from ICRP mesh-type reference computational phantoms (MRCPs)

  • Suhyeon Kim (Department of Nuclear Engineering, Hanyang University) ;
  • Bangho Shin (Department of Nuclear Engineering, Hanyang University) ;
  • Chansoo Choi (J. Crayton Pruitt Family, Department of Biomedical Engineering, University of Florida) ;
  • Hyeonil Kim (Department of Nuclear Engineering, Hanyang University) ;
  • Sangseok Ha (Department of Biomedical Engineering and Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea) ;
  • Beom Sun Chung (Department of Anatomy, Yonsei University Wonju College of Medicine) ;
  • Haegin Han (Division of Cancer Epidemiology & Genetics, National Cancer Institute, National Institute of Health) ;
  • Sungho Moon (Department of Nuclear Engineering, Hanyang University) ;
  • Gahee Son (Department of Nuclear Engineering, Hanyang University) ;
  • Jaehyo Kim (Department of Nuclear Engineering, Hanyang University) ;
  • Ji Won Choi (Department of Radiation Convergence Engineering, Yonsei University) ;
  • Chan Hyeong Kim (Department of Nuclear Engineering, Hanyang University) ;
  • Yeon Soo Yeom (Department of Radiation Convergence Engineering, Yonsei University)
  • Received : 2023.11.01
  • Accepted : 2024.03.17
  • Published : 2024.08.25
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Abstract

International Commission on Radiological Protection (ICRP) recently developed the adult and pediatric meshtype reference computational phantoms (MRCPs) in high-quality/fidelity mesh format, featuring high deformability into various body sizes and poses. Utilizing this feature, the adult MRCPs-based body-size-dependent phantom library was developed for individualized dosimetry. To complete the full phantom library set, the present study produced the pediatric-MRCPs-based body-size-dependent pediatric phantom library. The library comprises a total of 637 phantoms (356 males and 281 females) with varying standing heights and body weights, covering a wide range of body sizes (i.e., including from 1st to 99th percentile height and weight values) for infants, children, and adolescents, offering a realistic representation of body shapes by reflecting ten secondary anthropometric parameters. The phantoms were automatically constructed utilizing automatic deformation program. The dosimetric impact of the library was investigated by calculating organ doses for external exposures to broad parallel photon beams in anterior-posterior direction. Compared with the values of the pediatric MRCPs, significant differences were observed at energies <0.05 MeV, showing larger values for underweight phantom and smaller values for obese phantom. The results highlight the importance of using the pediatric phantom library for accurate dose estimates of individual children with various body sizes.

Keywords

Acknowledgement

This work was supported by the Nuclear Safety Research and Development (NSR&D) Program through the Korea Foundation of Nuclear Safety (KoFONS) funded by the Nuclear Safety and Security Commission (NSSC) (Project No. 2203028), the National Research Foundation of Korea (NRF) grant funded by the Korean government (Project No. 2022R1C1C100809312), and the Korea Institute of Energy Technology Evaluationi and Planning (KETEP) grant funded by the Korea government (MOTIE) (Project No. RS-2023-00236726).

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