Table 2 Dose constraints for the OARs for IMPT planning
Structures | Dose-volume constraints |
|---|---|
Body | Dmax < 115% |
Brainstem | Dmax < 54 Gy |
Cochlea | Dmean < 40 Gy |
Pharynx constrictor | Dmean < 50 Gy |
Larynx | Dmean < 50 Gy |
Mandible | Dmax < 75 Gy |
Oral cavity | Dmean < 50 Gy |
Spinal cord | Dmax < 48 Gy |
Parotid | Dmean < 26 Gy |
Parotid | V20Gy < 50% |
Esophagus | Dmean < 40 Gy |
Eye | Dmax < 45 Gy |
Optic nerve | Dmax < 50 Gy |
Optic chiasm | Dmax < 50 Gy |
Submandibular | Dmean < 39 Gy |