title: Electron dosimetry based on the absorbed dose to water concept: a comparison of the AAPM TG-51 and DIN 6800-2 protocols.
abstract: The dosimetry protocols DIN 6800-2 and AAPM TG-51, both based on the absorbed dose to water concept, are compared in their theoretical background and in their application to electron dosimetry. The agreement and disagreement in correction factors and energy parameters used in both protocols will be shown and discussed. Measurements with three different types of ionization chambers were performed and evaluated according to both protocols. As a result the perturbation correction factor P(60Co)wall for the Roos chamber was determined to 1.024 +/- 0.5%.
authors.affiliation: Abteilung für Medizinische Physik, Universitätsklinik füir Radioonkologie, Hoppe-Seyler-Str. 3, 72076 Tübingen, Germany. ordohm@med.uni-tuebingen.de
authors.forename: O S
authors.initials: OS
authors.lastname: Dohm
authors.forename: G
authors.initials: G
authors.lastname: Christ
authors.forename: F
authors.initials: F
authors.lastname: Nüsslin
authors.forename: E
authors.initials: E
authors.lastname: Schüle
authors.forename: G
authors.initials: G
authors.lastname: Bruggmoser
mesh_terms: D000465:Algorithms; D002138:Calibration; D004583:Electrons; D007477:Ions; D009010:Monte Carlo Method; D011874:Radiometry / Q000379:methods* / Q000592:standards*; D013696:Temperature; D014867:Water / Q000737:chemistry
chemical_list: D007477:Ions; D014867:Water