Table 2.
VPE and COME values of the tumor in the prior volume and the MMFD-NCC estimated tumors for all ten 4D-CBCT phases. All image estimations used orthogonal-view 30° projections around anterior-posterior and left-lateral directions from acquisition set 2 (Table 1).
| Phase | Peak-insp (0%) | 10% | 20% | 30% | 40% | Peak-exp (50%) | 60% | 70% | 80% | 90% | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| VPE/% | Prior | 357.7 | 220.8 | 183.0 | 254.4 | 268.1 | 268.5 | 252.1 | 183.2 | 230.0 | 353.1 |
| MMFD-NCC | 6.8 | 8.4 | 7.1 | 9.8 | 5.8 | 7.2 | 8.8 | 7.1 | 6.9 | 8.9 | |
|
| |||||||||||
| COME/mm | Prior | 17.4 | 7.7 | 4.1 | 10.0 | 11.2 | 11.2 | 10.0 | 4.0 | 8.5 | 16.8 |
| MMFD-NCC | 1.5 | 1.4 | 1.0 | 1.2 | 1.1 | 1.4 | 1.4 | 1.3 | 1.0 | 1.0 | |
*
Abbreviations: VPE: volume percentage error. COME: center-of-mass error.