Table II.
Dose constraints for organs at risk in IMRT plan optimization.
| Organs at risk | Dose constraint |
|---|---|
| Spinal cord | Maximum dose < 4500 cGy |
| Esophagus | D20% < 1500 cGy |
| Heart | D15% < 3000 cGy |
| Total Lung | D25% < 2000 cGy |
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