Quantitative Methods 2017

Protons versus photons Superior beam properties

200

Advantage of protons

180

160

140

Photons

Spread out Bragg Peak

120

100

Protons

10 MeV photons

Protons

80

Tumor

Protons

Protons

60

Organ at risk

40

Bragg Peak

Protons

20

5

10

15

20

25

30

Depth (cm) è

Skin