title: Determination of the shielding for an unoccupied roof of a radiation therapy facility to account for adjacent buildings--modification of a computer program.
abstract: An addition has been made to an existing software program for calculating shielding thicknesses of barriers for megavoltage radiation therapy beams. This addition calculates the shielding thicknesses required for the roof of a single-story building when adjacent, multi-level buildings are occupied.
authors.affiliation: Department of Radiation Oncology, Harvard Medical School, Massachusetts General Hospital, Boston 02114, USA.
authors.forename: P J
authors.initials: PJ
authors.lastname: Biggs
mesh_terms: D003198:Computer Simulation; D003252:Construction Materials; D005160:Facility Design and Construction; D006801:Humans; D011835:Radiation Protection / Q000379:methods*; D011878:Radiotherapy; D012984:Software