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4. Absorbed dose calculation
•
For each voxel and particle type, there is one transport equation for each
direction and energy interval, in Acuros
•
NxNxN voxels (3.6E4 – 1E6 for a one litre volume)
•
D discrete angles (32 – 512 )
•
E energy intervals (25 for photons, 49 for electrons)
•
Iterative solution
•
Yields at each point
•
Absorbed dose is calculated as:
= න
∞
න
4
, ,
( , )
, ,
,
⇒
2 ∙
3
∙ ∙
no. of equations:
water or medium