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Medical linac full beam line
Electron Gun
Accelerator
Target
Primary
collimator
Jaws (X,Y)
MLC
Flattening
filter
What parts of the beam line should
move to create a moving beam?
Dynamics of breathing/tracking:
-Frequencies up to 30 Hz
-Amplitudes of a few centimeters
-Sub-millimeter accuracy
Too heavy !!! (>>1000kg)
Tumor tracking
“Move only certain parts of the
beam line?”
“Loose some of that weight?”
SBRT 2017 - D. Verellen