[Gate-users] Distinguish original photon energy?
lapierce at uw.edu
Thu Mar 3 18:06:08 CET 2022
Dear GATE users,
I have a question regarding simulation of I-123, with 83% of the emission photons at 159 keV used for imaging. It also has 3% of the photons emitted being higher-energy up to 784 keV and these can contaminate the data and reconstructed image.
When simulating our SPECT detector, I would like to know the energy of the original photon to determine if it was an “imaging photon” or a “higher-energy photon” that led to the hit or single in the detector.
Does anyone know of a way to do this in GATE?
I have considered that we may use multiple overlapping spectrum sources with a mixture of imaging and high-energy photons and that the output source ID can then tell us if the originating photon was an imaging photon or a high-energy photon.
Still, I would like to ask the group for their input if there are other better ways to approach the issue.
Thank you for your consideration,
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