Dose 2016
50
Creating a clinically useable electron beam
Traditionally a single foil technique was used ⇒
To get a broad enough beam the single foil has to be quite thick ⇒ Significant energy loss and
spread.
The introduction of a secondary foil downstream reduces these problems since the total foil thickness can be reduced considerably.
ICRU 35 [8]
Utrecht 2016
Made with FlippingBook