Volumetric Sensitivities, Amount of Penetration, and Lowest NRMSE for the designs investigated
| Systems | Volumetric Sensitivity (x10-4) and Amount of penetration in parenthesis (%) | Total Number of Detected Counts for S2 (x106) | Lowest NRMSE values over iteration for S2 |
| Dual-headedParallel-hole (Two LEHRs on PhilipsForte) | 1.29 | 5.5 | |
| Knife-edge | 3.67 (15.7) | 15.61 | 0.333 |
| Keel-edge (h=0.375 mm) | 2.72 (9.9) | 13.69 | 0.332 |
| Keel-edge (h=0.75 mm) | 2.94 (8.3) | 12.52 | 0.332 |
| Keel-edge (h=1 mm) | 2.35 (8.1) | 11.92 | 0.333 |
| Keel-edge (h=1.125 mm) | 2.54 (8.1) | 11.56 | 0.333 |
| Keel-edge (h=1.5 mm) | 2.18 (8.2) | 10.8 | 0.336 |
| Keel-edge (h=1.875 mm) | 2.8 (8.7) | 10.02 | 0.338 |
| Keel-edge (h=2.25 mm) | 3.21 (9.1) | 9.26 | 0.340 |