Table 4.
NRMSE for the estimated 3D fluoroscopic images based on 4DCT motion models and 4DCBCT motion models in six patient-based XCAT datasets. Setup/positioning disparities are simulated in the LR, AP and SI direction, respectively in the top three rows. Tumor position is shifted in the LR, AP and SI directions, respectively in the bottom three rows.
| Dataset no. |
4DCT | 4DCBCT | ||
|---|---|---|---|---|
|
| ||||
| Initial NRMSE | Final NRMSE | Initial NRMSE | Final NRMSE | |
|
| ||||
| 1 | 0.17 | 0.21 | 0.14 | 0.10 |
| 2 | 0.13 | 0.22 | 0.11 | 0.08 |
| 3 | 0.22 | 0.19 | 0.17 | 0.17 |
| 4 | 0.13 | 0.09 | 0.10 | 0.08 |
| 5 | 0.15 | 0.09 | 0.12 | 0.09 |
| 6 | 0.09 | 0.07 | 0.07 | 0.06 |
|
| ||||
| Average | 0.15 | 0.15 | 0.12 | 0.10 |