title: Intercomparison of radiotherapy treatment planning systems for external photon and electron beam dose calculations.
abstract: Dose distributions calculated by six different treatment planning systems (TPSs), used by the hospitals in Finland or in Russia, were compared with measured dose distributions. Five typical cases of irradiation were selected: regular fields, oblique incidence, irregular field, wedge field and inhomogeneity in a water equivalent phantom. The beam data for each TPS where those pertaining to the beam where the comparative relative measurements were performed. The results indicate that the dose distributions produced by different TPSs can differ from each other as well as from the measured dose distributions up to a level which is not acceptable in terms of the ICRU recommendations. Greatest differences seem to be related to the omission or undue consideration of the scatter components of the beam.
authors.affiliation: Finnish Centre for Radiation and Nuclear Safety, Helsinki.
authors.forename: A
authors.initials: A
authors.lastname: Kosunen
authors.forename: H
authors.initials: H
authors.lastname: Järvinen
authors.forename: S
authors.initials: S
authors.lastname: Vatnitskij
authors.forename: I
authors.initials: I
authors.lastname: Ermakov
authors.forename: A
authors.initials: A
authors.lastname: Chervjakov
authors.forename: J
authors.initials: J
authors.lastname: Kulmala
authors.forename: M
authors.initials: M
authors.lastname: Pitkänen
authors.forename: T
authors.initials: T
authors.lastname: Väyrynen
authors.forename: A
authors.initials: A
authors.lastname: Väänänen
mesh_terms: D000465:Algorithms; D003037:Cobalt Radioisotopes / Q000627:therapeutic use; D004583:Electrons; D005373:Film Dosimetry; D005387:Finland; D005720:Gamma Rays; D006801:Humans; D008961:Models, Structural; D017785:Photons; D011785:Quality Assurance, Health Care; D011835:Radiation Protection; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted / Q000379:methods*; D011882:Radiotherapy, High-Energy / Q000379:methods; D012426:Russia; D012542:Scattering, Radiation
chemical_list: D003037:Cobalt Radioisotopes