title: Size and positioning reproducibility of an 192Ir brachytherapy stepping source.
abstract: In this paper we describe techniques for measuring the dimensions and position reproducibility of an 192Ir brachytherapy stepping source. Measurements were carried out using a 0.25x10x152 mm3 collimator placed in front of a detector of our own design. The brachytherapy source was translated past the collimator in 0.025 mm increments using a stepper motor. The source was found to be 3.58 mm long and 0.69 mm wide, which is in good agreement with the manufacturer's values of 3.5x0.6 mm2. The source position was reproducible to within 0.12 mm.
authors.affiliation: Cancercare Manitoba, Winnipeg, Canada.
authors.forename: A
authors.initials: A
authors.lastname: Berndt
authors.forename: D W
authors.initials: DW
authors.lastname: Rickey
authors.forename: S
authors.initials: S
authors.lastname: Rathee
authors.forename: J
authors.initials: J
authors.lastname: Bews
mesh_terms: D055592:Biophysical Phenomena; D001703:Biophysics; D001918:Brachytherapy / Q000379:methods* / Q000706:statistics & numerical data; D005069:Evaluation Studies as Topic; D006801:Humans; D007496:Iridium Radioisotopes / Q000008:administration & dosage* / Q000627:therapeutic use; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted; D015203:Reproducibility of Results
chemical_list: D007496:Iridium Radioisotopes