Table 2.
NRMSE for estimated 3D fluoroscopic images based on 4DCT motion models and 4DCBCT motion models, respectively for eight patients’ datasets. The initial NRMSE is the normalized RMSE of the ground truth images at different phases and the reference image. The final NRMSE is between the 3D fluoroscopic image and ground truth.
| Dataset no. |
4DCT | 4DCBCT | ||
|---|---|---|---|---|
|
| ||||
| Initial NRMSE |
Final NRMSE |
Initial NRMSE |
Final NRMSE |
|
|
| ||||
| 1 | 0.17 | 0.10 | 0.14 | 0.10 |
| 2 | 0.13 | 0.09 | 0.11 | 0.08 |
| 3 | 0.22 | 0.15 | 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 |
| 7 | 0.14 | 0.09 | 0.11 | 0.09 |
| 8 | 0.17 | 0.09 | 0.13 | 0.10 |
|
| ||||
| Average | 0.15 | 0.10 | 0.12 | 0.10 |