Table 3 Dose to the organs at risk (OAR) in proton treatment plans (54 Gy total dose)
Parameter | CT-MRI (Gy, median, range) | CT-MRI-PET (Gy, median, range) | p-value |
|---|---|---|---|
Brain Stem | |||
Dmax | 52.8 (51.2–53.2) | 52.8 (51.9–54.6) | 0.86 |
Dmedian | 11.7 (0.7–40.1) | 5.7 (0.4–35.3) | 0.008* |
Optic Chiasm | |||
Dmax | 52.6 (1.8–53.4) | 52.8 (1.81–54.7) | 0.767 |
Dmedian | 39.3 (0.3–53.4) | 39.7 (0.3–49.4) | 0.038 |
Left optic nerve | |||
Dmax | 52.8 (0.4–56.4) | 52.7 (0.4–55.7) | 0.678 |
Dmedian | 38.2 (0–51.9) | 29.9 (0–51.6) | 0.008* |
Right optic nerve | |||
Dmax | 51.6 (0.1–53.0) | 51.9 (0.1–54.3) | 0.674 |
Dmedian | 16.2 (0–51.2) | 6.4 (0–51.2) | 0.036* |