Study on patient-induced radioactivity during proton treatment in hengjian proton medical facility.

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ID: 51319
2016
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Ranked #4 of 55 articles by views in Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

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Abstract
At present, increasingly more proton medical facilities have been established globally for better curative effect and less side effect in tumor treatment. Compared with electron and photon, proton delivers more energy and dose at its end of range (Bragg peak), and has less lateral scattering for its much larger mass. However, proton is much easier to produce neutron and induced radioactivity, which makes radiation protection for proton accelerators more difficult than for electron accelerators. This study focuses on the problem of patient-induced radioactivity during proton treatment, which has been ignored for years. However, we confirmed it is a vital factor for radiation protection to both patient escort and positioning technician, by FLUKA's simulation and activation formula calculation of Hengjian Proton Medical Facility (HJPMF), whose energy ranges from 130 to 230MeV. Furthermore, new formulas for calculating the activity buildup process of periodic irradiation were derived and used to study the relationship between saturation degree and half-life of nuclides. Finally, suggestions are put forward to lessen the radiation hazard from patient-induced radioactivity.
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Authors Wu, Qingbiao;Wang, Qingbin;Liang, Tianjiao;Zhang, Gang;Ma, Yinglin;Chen, Yu;Ye, Rong;Liu, Qiongyao;Wang, Yufei;Wang, Huaibao;
Journal Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine
Year 2016
DOI
S0969-8043(16)30314-1
URL
Keywords
patient activation buildup fluka induced radioactivity o-15 proton saturation degree dose

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