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Table 1 Dose to the organs at risk (OAR) in IMRT 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 52.4 (39.8–55.3) 51.4 (39.7–54.7) 0.007*
 Dmedian 11.9 (2.8–22.4) 5.5 (3.7–16.1) 0.037*
Optic Chiasm
 Dmax 52.5(5.7–55.2) 51.0 (5.0–53.5) 0.007*
 Dmedian 39.9 (2.8–53.5) 37.9 (2.4–49.9) 0.203
Left optic nerve
 Dmax 53.8 (3.1–56.1) 52.3 (3.1–54.6) 0.017*
 Dmedian 40.9 (1.5–52.6) 37.1 (1.5–52.9) 0.063
Right optic nerve
 Dmax 49.5 (1.5–55-7) 48.4 (1.5–55.0) 0.022*
 Dmedian 28.2 (0.8–54.0) 24.7 (0.8–53.2) 0.047*
  1. *Significant difference <0.05