PFS and RT dose
Dose – response relationship
Shu et al., 2007
months
0
0.2
0.4
0.6
0.8
1
60
120
180
240
probability
> 54 Gy / n = 39
< 54 Gy / n = 39
P = 0.035
Intracranial ependymoma
Higher doses – superior PFS!