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Oliver Jäkel
Medical Physics
Brad Oborn et al.
Med. Phys 2017
Hybrid system: MRI in a rotating gantry
At least one vendor is seriously investigating this possibility
Page 20
Oliver Jäkel
Medical Physics
Dose calculation – deflection of primaries
• Simple Monte Carlo and numerical
studies of proton beam deflection
• Deflection is predictable
• Deflection is moderate, needs
correction
• No electron return effect
B Raaymakers et al., Phys. Med. Biol. 2008
Feasibility of MRI guided proton therapy: magnetic field dose effects
,
CAX dose unchanged!
B=0
B=0.5T
B=3T
Air
90 MeV protons
Wolf and Bortfeld, Phys. Med. Biol. 2012
90MeV beam in B (3T)
Air Water