Table 2.

Recommendations for 3–5 fractions SBRT treatment

Dosimetric constraints for normal liver	Radiation dose for GTV
V15 < 21.5%, VS10 ≥ 621.8 mL	SaRT: BED10 ≥ 100 Gy
V15 < 33.1%, VS10 ≥ 416.2–621.8 mL	SbRT: EQD2 ≥ 74 Gy
Without above conditions or Child–Pugh ≥ B7 class	ScRT: EQD2 < 74 Gy

GTV, gross tumor volume; V₁₅, percentage of normal liver volume receiving more than 15 Gy; VS₁₀, absolute normal liver volume spared from at least 10 Gy