Table 3 Volumes for general PTVs and the union of BSPTVs for all patients, and the beam angles corresponding to the extreme values of CTV projection area and the plan selected beam angles
Patient nos. | CTV volume (cm3) | General PTV volume (cm3) | BSPTV volume (cm3) | Volume difference (%) | Beam angles for maximum, 2nd maximum ITV projection area | Selected beam angles |
|---|---|---|---|---|---|---|
1 | 36.9 | 83.9 | 76.0 | − 10.4 | 204, 180 | 90, 150, 180, 230 |
2 | 11.5 | 29.2 | 27.9 | − 4.7 | 175, 210 | 21, 150, 180, 210, 335 |
3 | 6.7 | 22.9 | 18.8 | − 21.8 | 300, 320 | 0, 30, 170, 300 |
4 | 87.7 | 164.5 | 153.9 | − 6.9 | 102, 90 | 0, 30, 160, 190, 220 |
5 | 12.6 | 35.0 | 30.3 | − 15.5 | 90, 315 | 0, 90, 175, 315 |
6 | 3.1 | 12.9 | 11.3 | − 14.2 | 195, 180 | 70, 130, 180, 210 |
7 | 270.9 | 466.2 | 443.6 | − 5.1 | 0, 220 | 0, 30, 160, 220, 290 |
8 | 10.2 | 27.6 | 25.6 | − 7.8 | 106, 320 | 10, 40, 180, 330 |
9 | 1.5 | 9.0 | 7.0 | − 28.6 | 160, 125 | 40, 130, 180, 210 |
10 | 57.6 | 155.4 | 146.3 | − 6.2 | 45, 90 | 40, 95, 175, 225 |
11 | 12.3 | 32.9 | 31.3 | − 5.0 | 0, 210 | 0, 130, 170, 210 |
12 | 8.9 | 31.1 | 28.1 | − 10.7 | 130, 145 | 15, 150, 180, 210, 240 |
13 | 72.7 | 102.8 | 99.8 | − 3.0 | 320, 50 | 320, 40, 0, 170 |
14 | 9.4 | 26.0 | 24.6 | − 5.6 | 270, 240 | 240, 210, 180, 150, 15 |
15 | 14.4 | 40.0 | 36.7 | − 8.7 | 250, 180 | 210, 180, 150, 120, 345 |