title: Response to Bogard.
authors.affiliation: Medical Physics Department Cancer Centre of Southeastern Ontario 25 King St. W. Kingston, Ontario, Canada.
authors.forename: John
authors.initials: J
authors.lastname: Schreiner
authors.forename: Matthew
authors.initials: M
authors.lastname: Marsh
mesh_terms: D003252:Construction Materials / Q000032:analysis*; D017785:Photons; D011835:Radiation Protection / Q000295:instrumentation*