2017_SBRT_Course Book

Tumor tracking

Medical linac full beam line

What parts of the beam line should move to create a moving beam?

Electron Gun

Dynamics of breathing/tracking: -Frequencies up to 30 Hz -Amplitudes of a few centimeters -Sub-millimeter accuracy

Accelerator

Target Primary collimator Flattening filter Jaws (X,Y)

Too heavy !!! (>>1000kg)

“Move only certain parts of the beam line?” “Loose some of that weight?”

MLC

SBRT 2017 - D. Verellen