In-room imaging and MR planning

ERE (Electron Return Effect) First order compensation via opposing beams

100

B

80

60

central 15 mm 25 mm

40

20 Relative Dose (%)

0

0

1 2 3 4 5 6 7 8

Depth (cm)

5 0

100 %

0

25

75

Raaijmakers et al. Phys. Med. Biol. 50 (2005) p. 1363-76