title: Physical characteristics of the Selectron high dose rate intracavitary afterloader.
abstract: The physics measurements on a Selectron high dose-rate afterloading cobalt-60 unit are reported. The installation was found to be acceptable from the standpoint of radiation safety and cost effectiveness; hospital bed space was saved as treatment could be on an outpatient basis. A source calibration 4% higher than the value stated by the manufacturer was obtained. Measurement of the ratio of exposure rate in water to that in air confirmed the calibration and the applicability of correction factors for routine clinical dosimetry recommended in the literature.
mesh_terms: D001918:Brachytherapy / Q000191:economics / Q000295:instrumentation*; D002138:Calibration; D003037:Cobalt Radioisotopes / Q000627:therapeutic use; D003362:Cost-Benefit Analysis; D004867:Equipment Design; D004869:Equipment Safety; D011792:Quebec; D011835:Radiation Protection / Q000295:instrumentation; D011872:Radiology Department, Hospital; D011879:Radiotherapy Dosage
chemical_list: D003037:Cobalt Radioisotopes