Brain 17 Vienna
Re-irradiation for brain
15 x 2.7 Gy = 40.5 Gy
(previous treatment @60Gy [30 months], with brainstem Dmax~54Gy, LeftOptNerv & chiasma Dmax~52Gy)
Right Len
PTV
Right Opt Nerv
Left Len
Chiasma
Left Opt Nerv
Brain Stem
PTV : 85.5 cm3
brain stem max pt chiasma max pt left opt nerve max pt
dose = 5.4 Gy
MR used for planning
dose = 3.4 Gy
dose = 3.9 Gy
4 isocentric arcs partial arc
123-115-72-77 MU 28+28+34+34 sec
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