L0_2016_Athens_Physics_Programme_V6

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• Patient with an EDP-20

diode with extra build-up

cap.

• The diode is slightly shifted

with respect to the central

beam axis, to avoid

shielding by the entrance

diode.

• The electronic portal

imaging device (EPID) on

the right is used to verify the

correct diode position

Meijer GJ,

Int J Radiat Oncol

Biol Phys. 49:1409-18, 2001.

Clinical example