Table 3.
Optimal parameter combinations for deformable registration with Elastix (determined by the simulation study) and their registration accuracy in numerical simulation study
| Parameter set | Set1 | Set2 | Set3 | Gubern-Mérida [26] |
|---|---|---|---|---|
| Parameter | ||||
| Number of resolutions | 3 | 2 | 2 | 3 |
| Number of iterations | 500 | 500 | 500 | 500 |
| Transform rigidity penalty | 0 | 0 | 0.1 | 0.3 |
| Number of histogram bins | 64 | 64 | 64 | 32 |
| Final grid spacing in physical units | 8 | 8 | 8 | 40 |
| B-spline interpolation order | 3 | 2 | 3 | 1 |
| Final B-spline interpolation order | 2 | 4 | 3 | 1 |
| Registration results | ||||
| Median [mm] | 0.32 [0.13 1.13] | 0.29 [0.11 1.02] | 0.30 [0.12 1.04] | 1.02 [0.37 2.30] |
| 95 percentile [mm] | 3.71 | 5.02 | 4.70 | 5.48 |
| Run duration [s] | 380 | 330 | 336 | 383 |