title: Routine quality control of Ir-192 sources: results of 46 months of surveillance.
abstract: Documented problems with loose and inert Ir-192 seeds in nylon ribbons prompted us to develop a quality control program. Several problem cases are illustrated. A sample of ribbons from each shipment is measured in a radioisotope dose calibrator. Results of the measurements over a 46-month period are presented.
mesh_terms: D001918:Brachytherapy / Q000592:standards*; D002138:Calibration; D006801:Humans; D007495:Iridium / Q000627:therapeutic use*; D009369:Neoplasms / Q000532:radiotherapy*; D011786:Quality Control; D011868:Radioisotopes / Q000627:therapeutic use*
chemical_list: D011868:Radioisotopes; D007495:Iridium