In-room imaging and MR planning
F
0 field exerts a Lorentz force on e -
B
I
B
The resulting effect depends on the orientation of B 0 with respect to the incident beam
= Ԧ ×
x
e-
Perpendicular
•
e-
γ
Electron Return Effect (ERE)
•
e-
Raaijmakers et al., PMB 2005
Inline
•
Electron Focus Effect (EFE)
•
Oborn et al., Med Phys 2010
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