Table 8 Uncertainty budget for spleen activity ratios (ASPECT: SPECT-based activity, ACalibrator: radionuclide calibrator-based activity, R(α) / R(β) / R(V): uncertainty components introduced by the recovery originating from α, β and V, respectively)
Setup | ASPECT/ ACalibrator | Uncertainty components (%) | Combined uncertainty (%) | ||||||
|---|---|---|---|---|---|---|---|---|---|
Time | Counts | R(α) | R(β) | R(V) | ACalibrator | ICF | |||
S1 | 0.85 | 0.03 | 0.03 | 0.74 | 2.22 | 1.86 | 2.60 | 2.74 | 4.82 |
S2a | 1.05 | 0.03 | 0.02 | 1.73 | 4.42 | 3.00 | 2.83 | 3.13 | 7.02 |
S2b | 0.89 | 0.03 | 0.04 | 1.68 | 4.19 | 1.50 | 2.83 | 3.13 | 6.36 |
S2c | 0.91 | 0.03 | 0.04 | 0.57 | 1.71 | 0.77 | 2.83 | 3.13 | 4.65 |
S4 | 0.96 | 0.03 | 0.04 | 2.24 | 2.22 | 6.05 | 0.52 | 0.52 | 6.86 |
S5 | 1.03 | 0.03 | 0.02 | 2.11 | 5.56 | 3.84 | 4.00 | 7.07 | 10.77 |
S6 | 0.90 | 0.03 | 0.02 | 0.62 | 1.84 | 0.63 | 4.00 | 4.00 | 6.01 |
S7 | 0.93 | 0.03 | 0.02 | 0.84 | 2.60 | 1.96 | 4.24 | 4.24 | 6.87 |
S8 | 0.90 | 0.08 | 0.05 | 0.18 | 0.76 | 0.41 | 2.20 | 2.20 | 3.23 |
S9 | 0.96 | 0.08 | 0.04 | 0.66 | 2.02 | 1.78 | 2.20 | 2.20 | 4.17 |