2017_IGRT course book
Challenge: MR image acquisition affected by linac
• By radio frequency (RF) artefacts from beam generation
JMRI 38:268-287 (2013)
RF artefacts (not from a linac)
• By distortions due to • Magnetic objects close to the magnetic field • Eddy currents induced by moving (magnetic) objects (Gantry, MLC)
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