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Table 3 Dose to the organs at risk (OAR) in proton treatment plans (54 Gy total dose)

From: Influence of 68Ga-DOTATOC on sparing of normal tissue for radiation therapy of skull base meningioma: differential impact of photon and proton radiotherapy

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*
  1. *Significant difference <0.05