Table 2.

Protocol treatment goals

Volume	Goal 1	Goal 2	Goal 3
PTV	60 Gy to ≥ 95% of the PTV	≤ 20% of the PTV to > 66 Gy	≤ 1% of the PTV to < 54 Gy
Optic Chiasm	≤ 5% to > 47.25 Gy	≤ 33% to 40.5 Gy
Optic nerves	≤ 5% to > 47.25 Gy	≤ 33% to 40.5 Gy
Brainstem	≤ 5% to > 52.5 Gy	≤ 33% to 45 Gy
Spinal cord	≤ 5% to > 42 Gy	≤ 33% to 36 Gy
Eyes	≤ 5% to > 10.5 Gy	≤ 33% to 9 Gy

Abbreviations: PTV: planning target volume.