Table 2 Summary of the CRT boost treatment
Structure | Parameter | All patients Median (Range) | Patient 4 Grade 3 Rectal Bleeding | Patient 10 Grade 3 Rectal Bleeding |
|---|---|---|---|---|
Tumor | Dose (Gy) | 25.2 (20–30) | 20 | 30 |
|  | PTV (cm3) | 151 (58–512) | 512 | 393 |
|  | CN | 0.58 (0.34–0.78) | 0.74 | 0.75 |
Rectum | Volume1 (cm3) | 67 (29–147) | 61 | 73 |
|  | Overlap with PTV2 (%) | 15 (1–56) | 41 | 46 |
|  | V50 (cm3) | 57 (22–128) | 60 | 63 |
|  | V70 (cm3) | 45 (16–113) | 58 | 53 |
Bladder | Volume1 (cm3) | 183 (49–555) | 148 | 325 |
|  | Overlap with PTV2 (%) | 11 (4–35) | 35 | 20 |
|  | V50% (cm3) | 125 (32–187) | 148 | 161 |
|  | V70% (cm3) | 79 (23–145) | 145 | 106 |