[Gate-users] Isolating primary photons in root file?
cassandramiller at phas.ubc.ca
Wed Sep 11 19:20:22 CEST 2019
I'm making simulations of SPECT scans and I would like to only view the
primary photons from my root output file, and ignore all scattered
photons. When I used gate v7, to do this I simply did:
comptonPhantom == 0 && comptonCrystal == 0 && RayleighPhantom == 0 &&
RayleighCrystal == 0
and my resulting spectrum had only primary photons. However, when I do
those same commands with Gate v8, I get the spectrum (Lu-177) attached -
it doesn't look like all of the scattered photons are removed. There
shouldn't be any gamma emissions between 136 keV and 208 keV (besides
what is caused by the energy resolution of the detector), especially
because I used the histogram method to define my source, so I know there
should be no primary photons there!
Does anyone know if I am missing a command I have to call to ignore the
remaining scattered photons? I know I'm getting most of them but I want
to remove them all. I've also tried setting comptVolName = 'N', but that
doesn't change anything.
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