Table 6 Uncertainty budget for renal cortex 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 standard uncertainty (%) | ||||||
|---|---|---|---|---|---|---|---|---|---|
Time | Counts | R(α) | R(β) | R(V) | ACalibrator | ICF | |||
S2a | 0.88 | 0.03 | 0.03 | 1.99 | 4.47 | 4.08 | 2.83 | 3.13 | 7.64 |
S2b | 0.75 | 0.03 | 0.05 | 2.11 | 4.77 | 2.23 | 2.83 | 3.13 | 7.07 |
S2c | 0.77 | 0.03 | 0.05 | 0.79 | 2.15 | 1.25 | 2.83 | 3.13 | 4.96 |
S4 | 0.77 | 0.03 | 0.06 | 2.51 | 1.62 | 8.03 | 0.52 | 0.52 | 8.60 |
S7 | 0.78 | 0.03 | 0.03 | 1.15 | 3.10 | 3.20 | 4.24 | 4.24 | 7.56 |