Implications of using a 50-mm-thick skin target layer in skin dose coefficient calculation for photons, protons, and helium ionsopen access
- Authors
- Yeom, Yeon Soo; Thang Tat Nguyen; Choi, Chansoo; Han, Min Cheol; Lee, Hanjin; Han, Haegin; Kim, Chan Hyeong
- Issue Date
- Oct-2017
- Publisher
- KOREAN NUCLEAR SOC
- Keywords
- ICRP Reference Voxel Phantom; Monte Carlo; Polygonal-Mesh; Skin Dose Coefficient; Skin Target Layer
- Citation
- NUCLEAR ENGINEERING AND TECHNOLOGY, v.49, no.7, pp.1495 - 1504
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- NUCLEAR ENGINEERING AND TECHNOLOGY
- Volume
- 49
- Number
- 7
- Start Page
- 1495
- End Page
- 1504
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2744
- DOI
- 10.1016/j.net.2017.06.002
- ISSN
- 1738-5733
- Abstract
- In a previous study, a set of polygon-mesh (PM)-based skin models including a 50-mu m-thick radiosensitive target layer were constructed and used to calculate skin dose coefficients (DCs) for idealized external beams of electrons. The results showed that the calculated skin DCs were significantly different from the International Commission on Radiological Protection (ICRP) Publication 116 skin DCs calculated using voxel-type ICRP reference phantoms that do not include the thin target layer. The difference was as large as 7,700 times for electron energies less than 1 MeV, which raises a significant issue that should be addressed subsequently. In the present study, therefore, as an extension of the initial, previous study, skin DCs for three other particles (photons, protons, and helium ions) were calculated by using the PM-based skin models and the calculated values were compared with the ICRP-116 skin DCs. The analysis of our results showed that for the photon exposures, the calculated values were generally in good agreement with the ICRP-116 values. For the charged particles, by contrast, there was a significant difference between the PM-model-calculated skin DCs and the ICRP-116 values. Specifically, the ICRP-116 skin DCs were smaller than those calculated by the PM models-which is to say that they were under-estimated-by up to similar to 16 times for both protons and helium ions. These differences in skin dose also significantly affected the calculation of the effective dose (E) values, which is reasonable, considering that the skin dose is the major factor determining effective dose calculation for charged particles. The results of the current study generally show that the ICRP-116 DCs for skin dose and effective dose are not reliable for charged particles.
- Files in This Item
-
- Appears in
Collections - 서울 공과대학 > 서울 원자력공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2744)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.