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Monte Carlo modelling of live-timed anticoincidence (LTAC) counting for Cu-64



Denis E. Bergeron, Ryan P. Fitzgerald


The radionuclide copper-64 is a promising candidate for nuclear medicine, but its complex decay creates challenges in the primary standardization of its activity. Monte Carlo simulations of live timed anticoincidence (LTAC) counting of 64Cu were used to calculate corrections to extrapolation intercepts, resulting in improved activity determinations. A small correction (-0.33 %) to the linear extrapolation of LTAC data acquired with a γ-gate over the 1346 keV gamma peak was determined. We discuss the physical origin of the correction. We also use experimental data to demonstrate a Monte Carlo scaling that allows for inclusion of data acquired with a γ-gate set over the annihilation photon peak(s).
Applied Radiation and Isotopes


Beta-gamma coincidence method, anticoincidence, liquid scintillation, Monte Carlo simulations


Bergeron, D. and Fitzgerald, R. (2017), Monte Carlo modelling of live-timed anticoincidence (LTAC) counting for Cu-64, Applied Radiation and Isotopes, [online], (Accessed June 18, 2024)


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Created September 20, 2017, Updated November 10, 2018