Table 1.
Target prescription doses | |
GTV (Prostate) | 100% to 79.2 Gy/CGE |
| |
CTV (GTV & seminal vesicles) | 100% to 50.4 Gy/CGE |
| |
PTV2 (GTV + 5 mm margin) | 98% to 79.2 Gy/CGE |
| |
PTV1 (CTV + 5 mm margin) | 98% to 50.4 Gy/CGE |
| |
Tolerance doses for healthy organs | |
Rectum | <50% to 60 Gy/CGE |
<35% to 65 Gy/CGE | |
<25% to 70 Gy/CGE | |
<15% to 75 Gy/CGE | |
maximum 84.7 Gy/CGE | |
| |
Bladder | <50% to 65 Gy/CGE |
<35% to 70 Gy/CGE | |
<25% to 75 Gy/CGE | |
<15% to 80 Gy/CGE | |
maximum 84.7 Gy/CGE | |
| |
Femoral Head | maximum 50 Gy/CGE |
| |
Penile Bulb | mean dose < 52.5 Gy/CGE |
Abbreviations: GTV = gross tumor volume; CGE = cobalt Gray-equivalent; CTV = clinical target volume; PTV = planning target volume.