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Recommended OARs dose constraints for SBRT of liver metastasis in 3 fractions.
| OAR | Dose-volume limits |
|---|---|
| Healthy liver (total liver volume minus cumulative GTV) | >700 cm3 at <15 Gya |
| Stomach, duodenum, small intestine | D 3 cm3 at <21 Gyb |
| Both kidneys | V 15 Gy at <35% |
| Spinal cord | D 1 cm3 at <18 Gy |
| Heart | D 1 cm3 at <30 Gy |
| Rib | D 30 cm3 at <30 Gy |
Volume of healthy liver >1000 cm3.
Distance by GTV >8 mm.
