Table 2 Average, standard deviation, and minimum and maximum values of activity concentrations present in the spherical inserts and main phantom background at the PET acquisition time start. The resulting sphere-to-background activity concentration ratio is also reported
| Â | Ac,sph (kBq/mL) | Ac,bg (kBq/mL) | Sphere-to-bg ratio |
|---|---|---|---|
Average (n = 5) | 25.28 | 5.06 | 5.00 |
Standard deviation (SD) | 1.25 | 0.27 | 0.27 |
Min | 23.42 | 4.67 | 4.63 |
Max | 26.45 | 5.29 | 5.46 |