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Monte Carlo simulation of secondary neutron dose for scanning proton therapy using FLUKA.

Authors
 Chaeyeong Lee  ;  Sangmin Lee  ;  Seung-Jae Lee  ;  Hankyeol Song  ;  Dae-Hyun Kim  ;  Sungkoo Cho  ;  Kwanghyun Jo  ;  Youngyih Han  ;  Yong Hyun Chung  ;  Jin Sung Kim 
Citation
 PLoS One, Vol.12(10) : e0186544, 2017 
Journal Title
 PLoS One 
Issue Date
2017
MeSH
Computer Simulation* ; Dose-Response Relationship, Radiation ; Monte Carlo Method* ; Neutrons* ; Proton Therapy* ; Protons ; Radiotherapy Dosage* ; Reproducibility of Results
Abstract
Proton therapy is a rapidly progressing field for cancer treatment. Globally, many proton therapy facilities are being commissioned or under construction. Secondary neutrons are an important issue during the commissioning process of a proton therapy facility. The purpose of this study is to model and validate scanning nozzles of proton therapy at Samsung Medical Center (SMC) by Monte Carlo simulation for beam commissioning. After the commissioning, a secondary neutron ambient dose from proton scanning nozzle (Gantry 1) was simulated and measured. This simulation was performed to evaluate beam properties such as percent depth dose curve, Bragg peak, and distal fall-off, so that they could be verified with measured data. Using the validated beam nozzle, the secondary neutron ambient dose was simulated and then compared with the measured ambient dose from Gantry 1. We calculated secondary neutron dose at several different points. We demonstrated the validity modeling a proton scanning nozzle system to evaluate various parameters using FLUKA. The measured secondary neutron ambient dose showed a similar tendency with the simulation result. This work will increase the knowledge necessary for the development of radiation safety technology in medical particle accelerators.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/161326
DOI
10.1371/journal.pone.0186544
Appears in Collections:
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Radiation Oncology (방사선종양학교실)
Yonsei Authors
김진성(Kim, Jinsung)
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