title: GEANT4 calculations of neutron dose in radiation protection using a homogeneous phantom and a Chinese hybrid male phantom.
abstract: The purpose of this study is to verify the feasibility of applying GEANT4 (version 10.01) in neutron dose calculations in radiation protection by comparing the calculation results with MCNP5. The depth dose distributions are investigated in a homogeneous phantom, and the fluence-to-dose conversion coefficients are calculated for different organs in the Chinese hybrid male phantom for neutrons with energy ranging from 1 × 10(-9) to 10 MeV. By comparing the simulation results between GEANT4 and MCNP5, it is shown that using the high-precision (HP) neutron physics list, GEANT4 produces the closest simulation results to MCNP5. However, differences could be observed when the neutron energy is lower than 1 × 10(-6) MeV. Activating the thermal scattering with an S matrix correction in GEANT4 with HP and MCNP5 in thermal energy range can reduce the difference between these two codes.
authors.affiliation: Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA.
authors.forename: Changran
authors.initials: C
authors.lastname: Geng
authors.affiliation: Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China tangxiaobin@nuaa.edu.cn.
authors.forename: Xiaobin
authors.initials: X
authors.lastname: Tang
authors.affiliation: Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
authors.forename: Fada
authors.initials: F
authors.lastname: Guan
authors.affiliation: Nimbus Innovations, LLC, Temple, TX 76501, USA.
authors.forename: Jesse
authors.initials: J
authors.lastname: Johns
authors.affiliation: Environmental Health and Safety, Texas A&M University, College Station, TX 77843, USA.
authors.forename: Latha
authors.initials: L
authors.lastname: Vasudevan
authors.affiliation: Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China.
authors.forename: Chunhui
authors.initials: C
authors.lastname: Gong
authors.affiliation: Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China.
authors.forename: Diyun
authors.initials: D
authors.lastname: Shu
authors.affiliation: Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China.
authors.forename: Da
authors.initials: D
authors.lastname: Chen
mesh_terms: D003198:Computer Simulation; D006801:Humans; D008297:Male; D009010:Monte Carlo Method; D009502:Neutrons; D019047:Phantoms, Imaging; D011829:Radiation Dosage; D011835:Radiation Protection / Q000379:methods*; D011874:Radiometry / Q000379:methods*