Research Masterclass in Radiotherapy Physics 2017

Secondary radiation for in-vivo imaging of proton/ion beam RT

evaporated  nucleons projectile fragment

projectile

prefragment

Clusters

target

target fragment

Radioactive nuclei: decay slow, half lives: s/h De-excitation of nuclei:  -emission, fast ~10 -12 - 10 -9 s Evaporation of light ions: p, n,  , very fast ~10 -12 s

Oliver Jäkel

Medical Physics

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Prompt  -imaging principle

Oliver Jäkel Collimators and attached scintillation counters for various depths: Problem: low detection efficiency, no “tracking” Alternativ s: Compton amera (electronic collimation) Testa PhD thesis 2010 Medical Physics

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