Table 2.
Treatment planning goals and achieved dosimetry, GTV = gross tumour volume, PTV = planning target volume.
| Structure | Criteria | Goal | Median delivered (range) |
|---|---|---|---|
| GTVp | D95 | 40 Gy | 39.16 Gy (37.32–40.69) |
| PTVp | D95 | 36.25 Gy | 36.55 Gy (35.87–36.99) |
| GTVn = PTVn | D95 | 47.5 Gy | 46.62 Gy (44.85–48.25) |
| Rectum | V18.1 Gy | <50% | 29.65% (25.0–36.7) |
| V29Gy | <20% | 12.10% (10.2–13.8) | |
| V36Gy | <1cc | 0.93 cc (0.6–1.96) | |
| Bladder | V18.1 Gy | <40% | 22.70% (9.7–43.2) |
| V37Gy | <5cc | 4.44 cc (1.74–6.98) | |
| Prostatic urethra | V42Gy | <50% | 30.5% (0.7–42.9) |
| V45.6 Gy | <10% | 0% (0–9) | |
| Left Femoral Head | V14.5 Gy | <5% | 0% (0–0.1) |
| Right Femoral Head | V14.5 Gy | <5% | 2.15% (0–15.2) |
| Penile Bulb | V29.5 Gy | <50% | 0% (0–7.7) |
| Bowel | V30Gy | <1cc | 0% (0–0.13) |
| V18.1 Gy | <5cc | 0% (0–2.98) |