Mean Quantification Error for Emission Versus Transmission Template Matching for Perfusion and Receptor Ligand Studies Based on Count Difference Registration Accuracy
| Parameter | [99mTc]ECD | [123I]IBZM | [123I]β-CIT | [123I]R91150 | ||||
|---|---|---|---|---|---|---|---|---|
| ECT | TCT | ECT | TCT | ECT | TCT | ECT | TCT | |
| Translation | ||||||||
| Δx | 1.6 | 1.7 | 0.9 | 0.9 | 3.0 | 1.4 | 2.0 | 1.9 |
| Δy | 1.4 | 1.6 | 2.7 | 2.8 | 9.8 | 1.4 | 2.4 | 2.1 |
| Δz | 1.2 | 1.1 | 1.4 | 1.6 | 19.8 | 3.2 | 3.6 | 3.2 |
| All Δ | 2.4 | 2.6 | 3.2 | 3.3 | 22.3 | 3.8 | 4.8 | 4.3 |
| Rotation | ||||||||
| Φxy | 0.3 | 0.2 | 0.6 | 0.7 | 5.5 | 1.5 | 1.9 | 0.7 |
| Φxz | 0.2 | 0.1 | 0.8 | 0.7 | 10.5 | 1.6 | 1.3 | 0.3 |
| Φyz | 0.3 | 0.2 | 1.2 | 0.8 | 11.2 | 1.6 | 4.6 | 1.5 |
| All Φ | 0.5 | 0.3 | 1.6 | 1.3 | 16.3 | 2.7 | 5.1 | 1.7 |
| Scaling | ||||||||
| Σx | 0.3 | 1.0 | 0.7 | 1.3 | 2.9 | 1.5 | 1.1 | 1.0 |
| Σy | 0.8 | 0.5 | 0.7 | 1.0 | 7.0 | 0.8 | 1.7 | 1.0 |
| Σz | 0.7 | 0.5 | 1.2 | 1.4 | 4.2 | 3.5 | 5.8 | 3.0 |
| All Σ | 1.1 | 1.2 | 1.6 | 2.2 | 8.0 | 3.9 | 6.1 | 3.3 |
| All dimensions | 2.7 | 2.9 | 3.9 | 4.2 | 28.9 | 6.1 | 9.3 | 5.7 |
| Significance (paired t test) | NS (P = 0.9) | NS (P = 0.2) | P = 0.006 | P = 0.021 | ||||
NS = not significant.
All values are expressed as percentages.