Standardization of I-124 by three liquid scintillation-based methods
Denis E. Bergeron, Leticia S. Pibida, Brian E. Zimmerman, Jeffrey T. Cessna, Ryan P. Fitzgerald
A solution of 124I was standardized for activity by 4πβ(LS)-γ(NaI) live-timed anticoincidence (LTAC) counting, with confirmatory measurements by triple-to-double coincidence ratio (TDCR) and CIEMAT-NIST efficiency tracing (CNET) liquid scintillation counting. The LTAC-based standard was shown to be in agreement (within k = 1 uncertainties) with previous measurements at NIST and elsewhere. Calibration settings for radionuclide calibrators were determined and a discrepancy with literature values, partially due to a calibration methodology dependent upon an erroneous setting for 18F, was identified and explained.
, Pibida, L.
, Zimmerman, B.
, Cessna, J.
and Fitzgerald, R.
Standardization of I-124 by three liquid scintillation-based methods, Applied Radiation and Isotopes, [online], https://doi.org/10.1016/j.apradiso.2019.108849
(Accessed April 15, 2021)