title: Cesium-137 source strength verification.
abstract: Over the years, the protocol for Cesium-137 source calibration has undergone a number of revisions based on updated data. The 3M Corporation issued product alerts and a revision of the calibration protocol in the early 1980s. We verified the activity of clinically used cesium tubes and found the difference with the activity stated by 3M in the range of 6-13%, which exceeds the recommended by 3M adjustment of 5% for all sources issued before 1979. Therefore, the verification and adjustment of activity should be recommended for each affected tube individually.
authors.affiliation: Penn State Geisinger Health System, Danville 17822-2003, USA.
authors.forename: R
authors.initials: R
authors.lastname: Yankelevich
authors.forename: J B
authors.initials: JB
authors.lastname: Wojcicka
authors.forename: V
authors.initials: V
authors.lastname: Maier
authors.forename: C
authors.initials: C
authors.lastname: Anderko
mesh_terms: D002588:Cesium Radioisotopes / Q000008:administration & dosage*; D055585:Physical Phenomena; D010825:Physics; D011829:Radiation Dosage
chemical_list: D002588:Cesium Radioisotopes