An official website of the United States government
Here’s how you know
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.
Denis E. Bergeron, Jeffrey T. Cessna, Brian E. Zimmerman
Abstract
Dose calibrator dial settings reported by NIST in 2010 (ARI v. 68, p. 1367) are now known to give erroneously low (by 10 %) activity readings. The original determinations were based on a chain of calibrations; a broken link in this chain was recently discovered. New calibration factors (i.e., dial settings), directly linked to NIST primary standards, are reported here. In addition, the raw data used to derive the factors reported in 2010 are revisited. The validity of the reevaluation is established via comparison with the new experiments and revised calibration factors for numerous clinical geometries are reported. The main conclusions of the 2010 report regarding geometry effects remain valid.
Bergeron, D.
, Cessna, J.
and Zimmerman, B.
(2015),
Secondary standards for 223Ra revised, Applied Radiation and Isotopes, [online], https://doi.org/10.1016/j.apradiso.2015.03.008
(Accessed June 5, 2023)