title: An alternative to conventional shielding for megavoltage therapy rooms.
abstract: Dry silica sand as an "in-wall" shielding medium for megavoltage teletherapy rooms is discussed. Shielding considerations, construction techniques, and survey results are presented for a 6-MV facility using sand shielding for both primary and secondary barriers.
authors.affiliation: University of Florida, Department of Radiology, Gainesville 32610.
authors.forename: L T
authors.initials: LT
authors.lastname: Fitzgerald
mesh_terms: D005160:Facility Design and Construction; D006268:Health Facilities; D010315:Particle Accelerators; D011835:Radiation Protection / Q000592:standards; D011882:Radiotherapy, High-Energy; D012822:Silicon Dioxide
chemical_list: D012822:Silicon Dioxide