Quantitative Methods 2017

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Protons versus photons
Superior beam properties
120
140
160
180
200
30
20
40
60
80
100
5 10 15 20 25
Photons
Protons
Protons
Protons
Protons Tumor
Organ
at risk
10 MeV photons
Bragg Peak
Advantage
of protons
Spread out
Bragg Peak
Depth (cm) è Skin
Protons