TABLE II.
Dose (Gy) and percent differences (%) (in parenthesis) between D98, Dmean, and D2 of wCT vs wCT2, wCT2-c, and wCBCT-c, for prostate, bladder, and rectum, and for all bladder fullness levels.
| Prostate | Bladder | Rectum | Prostate gamma index pass% (γ < 1) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Bladder filling | X | D98 | Dmean | D2 | Dmean | D2 | Dmean | D2 | 2%/2 mm | 1%/1 mm |
| First deformation | ||||||||||
| Full | wCT2 | 79.2 (1.3) | 82.3 (3.9) | 84.1 (4.9) | 6.0 (2.9) | 35.5 (5.8) | 29.9 (2.9) | 80.5 (3.6) | 84.8 | 46.8 |
| wCT2-c | 78.2 (0.1) | 79.3 (0.2) | 80.4 (0.3) | 5.9 (0.3) | 33.7 (0.4) | 29.1 (0.0) | 78.1 (0.6) | 100.0 | 100.0 | |
| wCBCT-c | 78.4 (0.3) | 79.6 (0.5) | 80.7 (0.7) | 5.9 (0.2) | 33.8 (0.5) | 29.1 (0.2) | 78.5 (1.0) | 100.0 | 100.0 | |
| Half full | wCT2 | 79.0 (1.1) | 81.7 (3.2) | 83.2 (3.6) | 6.1 (2.2) | 35.3 3.9 | 29.8 (2.2) | 80.0 (2.9) | 82.8 | 46.6 |
| wCT2-c | 78.3 (0.2) | 79.4 (0.2) | 80.5 (0.3) | 6.0 (0.2) | 34.1 (0.3) | 29.2 (0.0) | 78.3 (0.7) | 100.0 | 100.0 | |
| wCBCT-c | 78.4 (0.3) | 79.6 (0.5) | 80.8 (0.6) | 5.9 (−0.7) | 34.1 (0.4) | 29.2 (0.2) | 78.4 (0.9) | 100.0 | 100.0 | |
| Empty | wCT2 | 79.1 (1.2) | 82.1 (3.6) | 84.2 (4.4) | 7.8 (9.1) | 36.5 (6.8) | 30.1 (2.6) | 80.4 (3.1) | 81.7 | 44.8 |
| wCT2-c | 78.3 (0.1) | 79.4 (0.2) | 80.9 (0.3) | 7.2 (1.4) | 34.0 (−0.6) | 29.3 (0.0) | 78.4 (0.6) | 100.0 | 100.0 | |
| wCBCT-c | 78.5 (0.4) | 79.7 (0.6) | 81.2 (0.7) | 7.2 (0.6) | 34.1 (−0.3) | 29.4 (0.3) | 78.5 (0.7) | 100.0 | 99.9 | |
| Second deformation | ||||||||||
| Full | wCT2 | 75.7 (1.6) | 80.7 (2.9) | 82.5 (3.5) | 10.3 (2.3) | 39.2 (2.8) | 28.5 (0.5) | 75.4 (2.3) | 89.2 | 58.4 |
| wCT2-c | 74.8 (0.3) | 78.6 (0.2) | 79.9 (0.3) | 10.1 (0.3) | 38.0 (−0.3) | 28.4 (0.1) | 74.0 (0.4) | 100.0 | 100.0 | |
| wCBCT-c | 74.7 (0.3) | 78.9 (0.5) | 80.1 (0.6) | 10.1 (0.2) | 38.3 (0.5) | 28.4 (0.4) | 74.8 (1.5) | 100.0 | 99.8 | |
| Half full | wCT2 | 76.0 (1.8) | 80.8 (3.0) | 82.9 (3.7) | 10.5 (3.0) | 39.6 (3.0) | 28.6 (0.6) | 75.7 (2.5) | 89.3 | 58.5 |
| wCT2-c | 74.9 (0.3) | 78.6 (0.2) | 80.2 (0.4) | 10.3 (0.4) | 38.4 (−0.2) | 28.5 (0.2) | 74.1 (0.3) | 100.0 | 100.0 | |
| wCBCT-c | 74.8 (0.2) | 78.9 (0.5) | 80.2 (0.4) | 10.2 (0.2) | 38.2 (−0.8) | 28.5 (0.3) | 74.8 (1.3) | 100.0 | 100.0 | |
| Empty | wCT2 | 75.9 (−1.1) | 81.1 (3.2) | 83.9 (4.3) | 13.0 (7.8) | 39.7 (4.8) | 28.9 (1.1) | 76.1 (2.8) | 87.7 | 57.2 |
| wCT2-c | 75.1 (−2.2) | 78.7 (0.2) | 80.7 (0.4) | 12.1 (0.0) | 37.7 (−0.3) | 28.6 (0.2) | 74.2 (0.2) | 100.0 | 100.0 | |
| wCBCT-c | 74.9 (−2.4) | 79.0 (0.6) | 80.8 (0.5) | 12.0 (−0.1) | 37.4 (−1.1) | 28.7 (0.4) | 74.8 (1.0) | 100.0 | 99.9 | |