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 May 21, 2025)
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Secondary standards for 223Ra revised
Published
Author(s)
, ,
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.Citation
Applied Radiation and Isotopes
Volume
101
Pub Type
Journals
Download Paper
Keywords
Ra-223, radium, alpha-emitter, dose calibrator, dose vial, syringe, radiopharmaceutical
Citation
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Created March 5, 2015, Updated November 10, 2018