Organ at risk | Maximum dose | Dose volume parameter |
---|---|---|
Brain | 63 Gy |  |
Brainstema | 54 Gy |  |
Chiasmb | 53 Gy |  |
Lens | 3 Gy |  |
Optical nerveb | 50 Gy |  |
Lips | 45 Gy |  |
Parotid glands |  | V28 Gy < 50% |
Spinea | 45 Gy |  |
Lung |  | V20 Gy < 20%; Dmean < 15 Gy |
Lungs, both |  | V5 Gy < 65%; V20 Gy < 20%; Dmean < 13 Gy |
Heart |  | V30 Gy < 20%; Dmean < 15 Gy |
Small intestine |  | V45 Gy < 78 cm3 |
Bladder |  | V40 Gy < 55%; V60 Gy < 25%; V70 Gy < 5% |
Rectum |  | V40 Gy < 60%; V60 Gy < 40%; V70 Gy < 20% |
PTV1 | 110%c | V95% > 95% |
PTV2 and PTV3 (sub-dose levels) | 110%c | V95% > 95%; D50% in [98.5% - 101.5%]c |