Tumor Activity Quantification
| Tumor radius (cm) | b | ROR (cm) | Location | Activity error* (%) |
|---|---|---|---|---|
| 3.63 | 0 | 26 | Center | −1.3 |
| 3.63 | 1/8 | 26 | Center | −0.2 |
| 3.63 | 1/5 | 26 | Center | +0.0 |
| 3.63 | 1/3 | 26 | Center | +0.5 |
| 3.63 | 0 | 22 | Center | +3.6 |
| 3.63 | 0 | 30 | Center | −6.5 |
| 3.63 | 0 | 26 | Off-axis 1 | +0.3 |
| 3.63 | 0 | 26 | Off-axis 2 | −1.2 |
| 3.63 | 1/8 | 26 | Off-axis 1 | +2.1 |
| 3.63 | 1/8 | 26 | Off-axis 2 | +1.0 |
| 3.63 | 1/5 | 26 | Off-axis 1 | +2.6 |
| 3.63 | 1/5 | 26 | Off-axis 2 | +1.8 |
| 3.63 | 1/3 | 26 | Off-axis 1 | +3.6 |
| 3.63 | 1/3 | 26 | Off-axis 2 | +3.3 |
| 3.63 | Nonuniform 1 | 26 | Center | +1.3 |
| 3.63 | Nonuniform 2 | 26 | Center | +1.8 |
| 2.88 | 0 | 26 | Center | −15.2 |
| 2.88 | 1/8 | 26 | Center | −11.7 |
| 2.88 | 1/5 | 26 | Center | −9.8 |
| 2.88 | 1/3 | 26 | Center | −6.6 |
| 2.29 | 0 | 26 | Center | −23.0 |
| 2.29 | 1/8 | 26 | Center | −14.6 |
| 2.29 | 1/5 | 26 | Center | −12.7 |
| 2.29 | 1/3 | 26 | Center | −6.7 |
| 1.68 | 0 | 26 | Center | −46.7 |
| 1.68 | 1/8 | 26 | Center | −37.3 |
| 1.68 | 1/5 | 26 | Center | −31.8 |
| 1.68 | 1/3 | 26 | Center | −22.7 |
↵* Error is percentage difference between SPECT estimated value and true simulated value.