Dear experts,
I would like to get the actual dose values from the simulation and want to know if the approach below is valid.
I am using source.f to generate realistic x-ray beam from specialized x-ray simulation software which gives me the spectrum and fluence. Integrating it I can get the estimated actual number of photon, let's say 10E7. In the simulation I can use USRBIN for all regions to score the overall number of photons detected in the simulation, let's say 10E2. So in the same simulation I can use this factor 10E7/10E2 for dose values as well to get the actual dose values for the specific x-ray tube.
I have tried to run the test simulation with 100x100x100 water cube in the vacuum. In the beginning I was integrating usrtrack fluence energy spectrum but later saw that usrbin region photon scoring gives the same value. So multiplying usrbin total dose value by this fluence actual/simulated factor and converting it to Gy gives me around 7E5 Gy - as it was expected from 80 kvp *1 mAs_at_1meter x-ray beam.
However if this approach is not valid, I would appreciate any comment what would be the correct way to do this.
Regards
Alexander
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Received on Fri Jan 25 2019 - 01:58:56 CET