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1. I need to be efficient
Can the CC method be both efficient
AND accurate…?
The less scerma varies the more I
can reduce the number of
directions
(increase of efficiency)
without a considerable loss of
accuracy
The approximation by CC that scerma is
transported linearly
will only break down
at increased distances where
r
2
ΔΩ=ΔS >>
so that the cone opening is greater than
voxel cross section
Figure from: Carlsson & Ahnesjö
Med. Phys. 27, 2320 (2000)