Mesh-type reference Korean phantoms (MRKPs) for adult male and female for use in radiation protection dosimetry
- Authors
- Choi, Chansoo; Thang Tat Nguyen; Yeom, Yeon Soo; Lee, Hanjin; Han, Haegin; Shin, Bangho; Zhang, Xujia; Kim, Chan Hyeong; Chung, Beom Sun
- Issue Date
- Apr-2019
- Publisher
- IOP PUBLISHING LTD
- Keywords
- radiological protection; reference phantom; Korean; mesh; Monte Carlo
- Citation
- PHYSICS IN MEDICINE AND BIOLOGY, v.64, no.8, pp.1 - 21
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICS IN MEDICINE AND BIOLOGY
- Volume
- 64
- Number
- 8
- Start Page
- 1
- End Page
- 21
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/14254
- DOI
- 10.1088/1361-6560/ab0b59
- ISSN
- 0031-9155
- Abstract
- In the present study, to overcome the dosimetric limitations of the previous voxel-type reference Korean computational phantoms due to their limited voxel resolutions (i.e. on the order of millimeters) and the nature of voxel geometry, a pair of new reference Korean phantoms, called mesh-type reference Korean phantoms (MRKPs), were developed for the adult male and female in a high-quality/fidelity mesh format. The developed phantoms include all target and source regions required for effective dose calculation, even micrometer-scale target and source regions of the respiratory and alimentary tract organs, skin, urinary bladder, and eye lens. The developed phantoms, which are in either the polygon-mesh (PM) format or the tetrahedral-mesh (TM) format as necessary, can be directly used in several general-purpose Monte Carlo codes (e.g. Geant4, MCNP6, and PHITS) without voxelization. In order to understand the dosimetric impact of the new phantoms, the dose coefficients (=fluence-to-effective dose conversion coefficients) were calculated for photons and electrons with energies ranging from 10 keV to 10 GeV for the anterior- posterior (AP) irradiation geometry and compared with those of the previous voxel-type reference Korean phantoms. The results demonstrate that the effective dose coefficients of the MRKPs were generally similar to those of the previous voxel-type reference phantoms for photons; however, for electrons, significant differences were observed at energies lower than 1 MeV that were mainly due to the explicit definition of the 50 mu m-thick radiosensitive target layer in the skin of the new mesh phantoms.
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