In-room imaging and MR planning

ERE (Electron Return Effect) Dose increase at all tissue-air boundaries

100

B

80

60

40

20 Relative Dose (%)

B = 1.5 T B = 0 T

0 1 2 3 4 5 6 7 8 0

Depth (cm)

108 %

0

52 26 78

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