9.
Maximum dose in different normal tissues
| Organ | Maximum dose |
| Lung | V20<25% |
| Heart | V30<30% |
| Spinal cord | Dmax≤45 Gy |
| Kidney | V20<25% |
| Small intestine | V45<195cc |
| Liver | V30<30%; Dmean<25 Gy |
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