Table 2 Dose constraints for target volumes and organs at risk
From: A prospective study of nomogram-based adaptation of prostate radiotherapy target volumes
Target volumes | Mandatory | Ideal |
|---|---|---|
 PTV70 D98% | ≥70.0 Gy | - |
 PTV70 D1cc | ≤77.0 Gy | ≤74.9 Gy |
 PTV61.6 D98% | ≥61.6 Gy | - |
 PTV50.4 D98% | ≥50.4 Gy | - |
 CTVP | ≥70.0 Gy | - |
 CTVSVI D99% | ≥70.0 Gy | - |
 CTVECE D99% | ≥61.6 Gy | - |
 CTVLN D99% | ≥50.4 Gy | - |
Organs at risk | Â | Â |
 Rectum D15% | ≤74.0 Gy | ≤74.0 Gy |
 Rectum D25% | ≤69.0 Gy | ≤60.0 Gy |
 Rectum D35% | ≤64.0 Gy | ≤50.0 Gy |
 Rectum D50% | ≤59.0 Gy | ≤40.0 Gy |
 Bladder D15% | ≤79.0 Gy | ≤74.0 Gy |
 Bladder D25% | ≤74.0 Gy | ≤60.0 Gy |
 Bladder D30% | ≤69.0 Gy | ≤50.0 Gy |
 Bladder D50% | ≤64.0 Gy | ≤40.0 Gy |
 Neck of femur D5% | ≤44.0 Gy | - |
 Small bowel PRV D99% | ≤52.0 Gy | - |
 Small bowel V45Gy | ≤195 cc | - |
 Penile bulb mean dose | - | ≤51.0 Gy |