Characteristics of 3 Collimators
| Parameter | LEUHR | LEHR | Medium-energy |
| Septal thickness (mm) | 0.13 | 0.16 | 1.14 |
| Hole diameter (mm) | 1.16 | 1.11 | 2.94 |
| Hole length (mm) | 35.8 | 24.05 | 40.64 |
| Extrinsic sensitivity (cpm/kBq)* | 2.70 | 5.46 | 8.38 |
| Spatial resolution (mm) | 4.6 | 6.4 | 10.8 |
| Septal penetration at 159 keV | 2.0% | 3.5% | 0.0% |
| Septal penetration at 300 keV | 42% | 48% | 4.90% |
| Septal penetration at 500 keV | 71% | 75% | 30% |
↵* At 140 keV.