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Table 1 Dose constraints (for 3 to 4 fractions)

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