Dose Course 2018_Flipping book

For each voxel

⋅

,

= −

,

( )

, ,

, ,

෍ − +

′

+෍෍ =0

′

′ ,

′

→ , ,

No. of discrete angles: 32 – 512 No. of energy intervals: 25 for photons, 49 for electrons

1 − −

ΔΩ

∆ =

c.f. collapsed cone:

2

energy scattered into the direction

fraction scattered out of the direction