Table 5.
Dosimetric parameters for both target volumes and organs at risk.
| PTV | ||||
| Structure | Parameter | Mean | SD | |
| D98 (Gy)-50.4 Gy | 48 | 0 | ||
| PTV-tumor | D2 (Gy)-50.4 Gy | 54 | 0 | |
| D98 (Gy)-54 Gy | 50.2 | 2.44 | ||
| D2 (Gy)-54 Gy | 57.55 | 1.36 | ||
| V95 (%) | 95.45 | 8.61 | ||
| V107 (%) | 2.66 | 2.81 | ||
| PTV-elective volumes | D98 (Gy)-42 Gy | 48 | 0 | |
| D2 (Gy)-42 Gy | 54 | 0 | ||
| D98 (Gy)-45 Gy | 50.2 | 2.44 | ||
| D2 (Gy)-45 Gy | 57.55 | 1.36 | ||
| V95 (%) | 95.45 | 8.61 | ||
| V107 (%) | 2.66 | 2.81 | ||
| OARs | ||||
| Organ at risk | Parameter | Mean | SD | |
| Bladder | V30 (%) | 42.95 | 14.3 | |
| V40 (%) | 18.67 | 15.76 | ||
| V50 (%) | 4.33 | 12.31 | ||
| D2 (Gy) | 45.90 | 4.97 | ||
| Mean dose (Gy) | 29.29 | 4.23 | ||
| Bowel | V30 (cc) | 88.86 | 108.05 | |
| V35 (cc) | 63.38 | 78.42 | ||
| V40 (cc) | 19 | 24.65 | ||
| V45 (cc) | 5.90 | 6.99 | ||
| D2 (Gy) | 44.47 | 3.35 | ||
| Mean dose (Gy) | 18.20 | 5.07 | ||
| External genitalia | V20 (%) | 39.67 | 24.87 | |
| V30 (%) | 27.80 | 21.86 | ||
| V40 (%) | 18.14 | 13.57 | ||
| D2 (Gy) | 49.61 | 10.60 | ||
| Mean dose (Gy) | 21.43 | 10.16 | ||
| Femoral heads | V30 (%) | 13 | 8.14 | |
| V40 (%) | 4 | 5.70 | ||
| V45 (%) | 1 | 4.56 | ||
| V50 (%) | 1 | 4.35 | ||
| D2 (Gy) | 40 | 5.10 | ||
| Mean dose (Gy) | 17 | 3.42 | ||
Legend: PTV: planning target volume; OAR: organs at risk; cc: cubic centimeters; SD standard deviation; Gy: Gray.