Zimmerman, B.
and Bergeron, D.
(2016),
(Mis)use of 133Ba as a calibration surrogate for 131I in clinical activity calibrators, Applied Radiation and Isotopes, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=918657
(Accessed December 26, 2024)
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
(Mis)use of 133Ba as a calibration surrogate for 131I in clinical activity calibrators
Published
Author(s)
,
Abstract
Using NIST-calibrated solutions of 131Ba and 131I in the 5 mL NIST ampoule geometry, measurements were made in three NIST-maintained Capintec activity calibrators and the NIST Vinten 671 ionization chamber to evaluate the suitability of using 133Ba as a calibration surrogate for 131I. For the Capintec calibrators, the 133Ba response was a factor of about 3 times higher than that of the same amount of 131I. For the Vinten 671, the Ba-133 response was about 7 % higher than that of 131I. These results demonstrate that 133Ba is a poor surrogate for 131I. New calibration factors for these radionuclides in the ampoule geometry for the Vinten 671 and Capintec activity calibrators were also determined.Citation
Applied Radiation and Isotopes
Pub Type
Journals
Download Paper
Keywords
activity calibrators, barium-133, iodine-131, ionization chambers
Citation
Issues
If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.
Created March 1, 2016, Updated February 19, 2017