Table 8 The total counts normalised to acquisition time and phantom activity for the two emission window images (EM1 and EM2) of the \(^{177}\)Lu phantoms with standard uncertainties
Isotope | Phantom | Window | Sensitivity (counts/(s\(\times\)MBq)) | Sensitivity ratio | |
|---|---|---|---|---|---|
| Â | Â | Â | Simulation | Experiment | (Sim/Exp) |
\(^{177}\)Lu | Cylinder | EM1 | 7.63 ± 0.16 | 8.632 ± 0.043 | 0.884 ± 0.020 |
|  |  | SC1 | 1.369 ± 0.049 | 1.647 ± 0.008 | 0.831 ± 0.030 |
|  |  | SC2 | 1.094 ± 0.042 | 1.160 ± 0.006 | 0.943 ± 0.037 |
|  |  | EM2 | 7.15 ± 0.17 | 8.664 ± 0.043 | 0.825 ± 0.020 |
|  |  | SC3 | 0.925 ± 0.040 | 1.201 ± 0.006 | 0.770 ± 0.034 |
|  |  | SC4 | 0.140 ± 0.006 | 0.226 ± 0.001 | 0.622 ± 0.026 |
\(^{177}\)Lu | NEMA | EM1 | 6.27 ± 0.14 | 6.889 ± 0.035 | 0.910 ± 0.020 |
|  |  | SC1 | 1.385 ± 0.05 | 1.655 ± 0.009 | 0.837 ± 0.031 |
|  |  | SC2 | 0.999 ± 0.039 | 1.077 ± 0.006 | 0.928 ± 0.036 |
|  |  | EM2 | 5.36 ± 0.13 | 6.275 ± 0.032 | 0.855 ± 0.021 |
|  |  | SC3 | 0.975 ± 0.043 | 1.179 ± 0.006 | 0.827 ± 0.037 |
|  |  | SC4 | 0.184 ± 0.008 | 0.197 ± 0.001 | 0.935 ± 0.039 |