Modality
Nominal energy
Difference (%)
High-energy X-rays
6 MV
-
15 MV
-0.2
±
0.6
Electrons
6 MeV
-0.5
±
0.7
9 MeV
-1.2
±
0.6
12 MeV
0.5
±
0.6
16 MeV
-0.4
±
0.6
20 MeV
-0.2
±
0.6
(
uncertainty k=1)
Energy Dependence; reference conditions
Organic scintillator
(W1 Standard Imaging)