Table 3.

GYN treatment planning protocol: Organs at Risk

OAR structures	Objective	Minor deviation
Bladder	V45 < 35%	V50 < 35%
Rectum	V30 < 60%	V50 < 35%
Sigmoid	V30 < 60%	V50 < 35%
Femoral heads	V30 < 15%	V30 < 20%
Kidneys	V20 < 32% V28 < 20% Mean < 15–18Gy	V30 < 25%
Pelvic bone marrow	V15 < 75% V10 < 90%	V15 < 80% V10 < 95%
Small bowel	V40 < 30%
1. Peritoneal cavity (Peritoneal volume edited off PTV)	V40 < 200–300cc V45 < 100cc	V45 < 195cc
2. Individual loops	V15 < 120cc

Abbreviations: GYN = gynaecologic; OAR = organ at risk, PTV = planning target volume.