Standardization of 68 Ge- 68 Ga using 4πβ(LS)-γ coincidence counting system for activity measurements

Results of an international comparison of activity measurements of 68Ge

“…BARC reported using DDEP data from 2003 (Kulkarni et al, 2017). It could be expected that coincidence counting results would increase by approximately 0.3 % due to the change in positron branching ratios from the old DDEP data to that specified for the comparison.…”

Standardization of 68 Ge/ 68 Ga using the 4πβ−γ coincidence method based on Cherenkov counting

“…Several methods were reported in the literature for the activity standardization of 68 Ge/ 68 Ga (Schönfeld et al, 1994;Grigorescu et al, 2004;Zimmerman et al, 2008;Kulkarni et al, 2017). Because of the volatility of germanium, primary methods based on liquid scintillation (LS) can be preferred to those using dried sources.…”