1244-1245 / 1363
0
1 2 3 4 5 6 7 8
0
20
40
60
80
100
central
15 mm
25 mm
Depth (cm)
Relative Dose (%)
0
100
%
5
0
25
75
B
Raaijmakers et al.
Phys. Med. Biol.
50
(2005) p. 1363-76
ERE (Electron Return Effect)
First order compensation via opposing beams