From: Prognostic factors affecting local control of hepatic tumors treated by stereotactic body radiation therapy
Organ
Dose constraints
Liver
V21 < 33%
Spinal cord
Dmax < 22 Gy
Kidney
V15 < 33%
Stomach
V21 < 5 cm3
Duodenum
V15 < 5 cm3
Dmax < 24 Gy
Small intestine
V16 < 5 cm3
Dmax < 27 Gy