Dose Course 2018_Flipping book

calculation techniques:

Depth invariant (almost) shape relative dose profile – use for interpolation to save convolutions?

Primary dose profiles for a 10x10 cm field at 1, 3, 5 and 10 cm depths Scatter dose profiles at 5, 10, 15 and 20 cm depths

The profiles change smoothly as functions of a z and b z and hence are suitable for interpolation with a z and b z as interpolation variables!

Primary

Scatter

Profiles correspond to different b z

Parameterization reminder:

a r

b r

−

−

A

B

e

e

p r z

z

z

a

b

( ) ,

z

z

=

+

z

z

r

r



primary dose scatter dose

Depth (cm)