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

ABSTRACT: 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 1346keV 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).

SUBMITTER: Bergeron DE 

PROVIDER: S-EPMC6237201 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature