title: Structural shielding design for a gamma ray stereotactic body radiotherapy system.
abstract: An OUR-QGD gamma ray stereotactic body radiotherapy system (body knife), made in China, is described. According to its structure and the principle of gamma radiation revolved on a focus, the energy distribution of scattered radiation in its treatment room is calculated. The structural shielding of the wall, roof, and door for a certain treatment room is calculated according to the local radiation protection law.
authors.affiliation: Institute of Radiation Medicine, National Center of Biomedical Analysis, Beijing 100850, People's Republic of China.
authors.forename: Xiangdong
authors.initials: X
authors.lastname: Xie
authors.forename: Guoshan
authors.initials: G
authors.lastname: Yang
authors.forename: Hongmei
authors.initials: H
authors.lastname: Zhou
authors.forename: Decheng
authors.initials: D
authors.lastname: Qu
mesh_terms: D002681:China; D003037:Cobalt Radioisotopes; D005720:Gamma Rays; D006801:Humans; D011829:Radiation Dosage; D011835:Radiation Protection / Q000379:methods*; D011874:Radiometry; D016634:Radiosurgery / Q000295:instrumentation*; D012542:Scattering, Radiation; D013238:Stereotaxic Techniques
chemical_list: D003037:Cobalt Radioisotopes