ESTRO PT 2018

Passive depth dose modulation

Superposition of Bragg peaks with various energies and different weights:

n

i i zDw zD )(

 )(

 

i

1

100

80

60

40

relative Dosis (%) 0 20

0

5

10

15

20

Tiefe (cm)

range

modulation width

Oliver Jäkel

Medical Physics

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