Table 1.
Calculated 68Ga activity from various γ-ray gates and using Eq. (3), with and without the final correction term, and relative to the corrected G2 value, (used for the final activity determination). The uncertainties (k = 1) on the uncorrected activities are standard deviations of the intercepts from the least-squares fits to the various data sets. The uncertainties (k = 1) of the corrected values are from estimates of the uncertainties in εann and εγ1077
| γ-ray gate | Uncorrected N0 (Bq) | Corrected N0 (Bq) |
|---|---|---|
| G1 - Comptons | 1.020 ± 0.002 | 1.002 ± 0.004 |
| G2 - photopeak | 1.0021 ± 0.001 | 1.0000 ± 0.0004 |
| G3 - sum peak | 1.033 ± 0.002 | 1.000 ± 0.007 |