Table 2b.
Dose to organs at risk based on whole breast radiotherapy plans for CTV-breast.
| Constraint | Center A (smallest CTV-breast volume) | Center C (smallest total CTV volume) | Center H (largest total CTV volume) | Center J (largest CTV- breast volume) | CTV-mean | Raystation |
MVision | |
|---|---|---|---|---|---|---|---|---|
| Heart | Dmean (Gy) | 1.27 | 1.79 | 2.10 | 1.64 | 1.81 | 2.50 | 2.19 |
| V17Gy (%) | 0.88 | 2.15 | 2.66 | 1.53 | 2.15 | 3.94 | 3.09 | |
| Lung (ipsilateral) | V16Gy (%) | 9.95 | 11.21 | 17.37 | 14.52 | 13.66 | 15.86 | 15.34 |
| Dmean (Gy) | 4.83 | 5.39 | 7.41 | 6.50 | 6.15 | 6.89 | 6.78 | |
| V5Gy (%) | 18.43 | 20.74 | 26.85 | 24.84 | 22.87 | 25.28 | 25.18 | |
| Lung (contralateral) | Dmean (Gy) | 0.06 | 0.07 | 0.11 | 0.09 | 0.08 | 0.10 | 0.10 |
| Breast (contralateral) | Dmean (Gy) | 0.10 | 0.05 | 0.07 | 0.06 | 0.05 | 0.06 | 0.06 |
| Esophagus | V9Gy (cc) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| V18Gy (cc) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | |
| Dmean (Gy) | 0.25 | 0.29 | 0.34 | 0.36 | 0.29 | 0.32 | 0.32 | |
| Thyroid gland | Dmean (Gy) | 0.15 | 0.19 | 0.30 | 0.43 | 0.20 | 0.24 | 0.26 |
| Body | V105% (cc) | 10.10 | 18.93 | 3.19 | 5.53 | 4.55 | 0.66 | 8.57 |
| Humeral Head | Dmean (Gy) | 0.44 | 0.49 | 1.27 | 1.64 | 0.62 | 0.78 | 0.71 |
Abbreviations: cc cubic centimeters, D dose, Gy Gray, V volume.