title: Transmission measurements in multi-rod arrays: a design study for a multi-rod collimator.
abstract: The results of transmission measurements for neutrons, cobalt-60 gamma-rays, and 10 and 15 MV photons made with close-packed arrays of tungsten rods are presented. These results indicate that tungsten rod arrays of reasonable thickness can provide for primary or secondary collimation of all these radiation beams. Development work on a collimation system utilizing the multi-rod concept which is capable of producing irregularly shaped fields and suitable for use in photon or neutron radiation therapy is described.
authors.affiliation: Gershenson Radiation Oncology Center, Harper-Grace Hospital, Detroit, MI 48201.
authors.forename: R L
authors.initials: RL
authors.lastname: Maughan
authors.forename: G F
authors.initials: GF
authors.lastname: Blosser
authors.forename: E B
authors.initials: EB
authors.lastname: Blosser
authors.forename: H G
authors.initials: HG
authors.lastname: Blosser
authors.forename: W E
authors.initials: WE
authors.lastname: Powers
mesh_terms: D006801:Humans; D011882:Radiotherapy, High-Energy / Q000295:instrumentation*; D013679:Technology, Radiologic; D014414:Tungsten
chemical_list: D014414:Tungsten