title: A new radiation shielding block material for radiation therapy.
abstract: In recent years, lead has been recognized as a source of environmental pollution; this includes lead use for radiation shielding in radiotherapy. We looked for a new material that could be a lead substitute. We chose a material composed of tungsten and resin. We compared the attenuation coefficient of the material with those of lead and Lipowitz's metal, and found the material has a higher attenuation coefficient than the other two. The material may be used as a substitute for lead because it is easy to fabricate and friendly to the environment.
authors.affiliation: Radiological Technology Office, National Institute of Radiological Sciences 4-9-1, Anagawa, Inage-ku, Chiba 263-8555, Japan. m_tajiri@nirs.go.jp
authors.forename: Minoru
authors.initials: M
authors.lastname: Tajiri
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Sunaoka
authors.forename: Akifumi
authors.initials: A
authors.lastname: Fukumura
authors.forename: Masahiro
authors.initials: M
authors.lastname: Endo
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry* / Q000528:radiation effects*; D004307:Dose-Response Relationship, Radiation; D018499:Linear Energy Transfer; D008420:Manufactured Materials / Q000032:analysis* / Q000528:radiation effects*; D008422:Materials Testing / Q000379:methods*; D011835:Radiation Protection / Q000295:instrumentation* / Q000379:methods; D011878:Radiotherapy / Q000295:instrumentation* / Q000379:methods
chemical_list: D001672:Biocompatible Materials