TABLE I.
Comparison of volumetric image estimation accuracy based on initial and final NRMSE. The first column shows the NRMSE between test images and reference images while the second column shows the NRMSE between reference images and time-varying estimated volumetric images.
| Initial NRMSE | Final NRMSE | |
|---|---|---|
| 1 | 0.13 ± 0.06 | 0.09 ± 0.03 |
| 2 | 0.16 ± 0.09 | 0.09 ± 0.03 |
| 3 | 0.10 ± 0.04 | 0.08 ± 0.02 |
| 4 | 0.15 ± 0.06 | 0.12 ± 0.04 |
| 5 | 0.11 ± 0.05 | 0.08 ± 0.02 |
| 6 | 0.09 ± 0.04 | 0.07 ± 0.02 |
| 7 | 0.19 ± 0.09 | 0.11 ± 0.03 |
| 8 | 0.20 ± 0.08 | 0.12 ± 0.04 |