636 / 1359
Pencil beam based models
❑
Transport
o
Pencil Beam kernels determined in water from MC and/or
measurements
o
Transport scaled by mass or electron density
1
❖
In principle one either use water as medium or
❖
introduce a medium during scaling
o
Dose deposit in water
❑
Deposit
o
No conversion to medium during absorption
❑
Thus on general we have (to a water element in water) and/or it
can in principle be (water element in medium)
Dublin 2018
7
,
1)
Scales best electron density according to Seco and Evans, Med Phys 2006,
but important to check what the specific TPS requires
,