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<div dir="ltr">No, I have not. Can you tell me what informationis in parentID ? Does that tell the originating particle (I-123) or the originating photon energy?</div>
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<div dir="ltr">Thanks,</div>
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<div dir="ltr">-Larry</div>
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<blockquote type="cite">On Mar 3, 2022, at 10:12 AM, Konstantinos P. Chatzipapas <konhat88@yahoo.gr> wrote:<br>
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<div dir="ltr" data-setdir="false">Have you try to filter hits using ParentID leaf?</div>
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<div dir="ltr" data-setdir="false">Konstantinos</div>
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<div>Στις Πέμπτη, 3 Μαρτίου 2022, 06:40:49 μ.μ. CET, ο χρήστης Larry Pierce <lapierce@uw.edu> έγραψε:
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<div>Yes, I see, thank you!
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<div class="yiv6532262222">However, there may be scattered imaging photons in the window as well as scattered high-energy photons in the window. </div>
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<div class="yiv6532262222">I want to know the fraction of imaging photons and high-energy photons that contributed to the window. </div>
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<div class="yiv6532262222">If there is a way to know this for each hit or single, that would be a great help. </div>
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<div class="yiv6532262222">Thanks for the advice!</div>
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<div class="yiv6532262222">-Larry Pierce</div>
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<div class="yiv6532262222">On Mar 3, 2022, at 9:27 AM, Konstantinos P. Chatzipapas <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:konhat88@yahoo.gr" target="_blank" href="mailto:konhat88@yahoo.gr" class="yiv6532262222">konhat88@yahoo.gr</a>>
wrote:</div>
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<div dir="ltr" class="yiv6532262222">Hello there,</div>
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<div dir="ltr" class="yiv6532262222">If you have a limited window (let's say 159 keV, 10%), you may limit your result to scatter and unscattered photons of this energy. If you are using root you may set comptonPhantom==0 or !=0, as a parameter.</div>
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<div dir="ltr" class="yiv6532262222">Does that help?</div>
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<div dir="ltr" class="yiv6532262222">Kind Regards,</div>
<div dir="ltr" class="yiv6532262222">Konstantinos</div>
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<div class="yiv6532262222">Konstantinos CHATZIPAPAS | PhD, CNRS | "Interactions Rayonnements Ionisants & Biologie" (iRiBio)</div>
<div class="yiv6532262222">Centre d'Etudes Nucléaires de Bordeaux-Gradignan - UMR 5797</div>
<div class="yiv6532262222"><a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="https://www.cenbg.in2p3.fr/" class="yiv6532262222">https://www.cenbg.in2p3.fr/</a></div>
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<div class="yiv6532262222">Στις Πέμπτη, 3 Μαρτίου 2022, 06:07:00 μ.μ. CET, ο χρήστης Larry Pierce <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:lapierce@uw.edu" target="_blank" href="mailto:lapierce@uw.edu" class="yiv6532262222">lapierce@uw.edu</a>>
έγραψε: </div>
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<div dir="ltr" class="yiv6532262222">Dear GATE users, <br clear="none" class="yiv6532262222">
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<div dir="ltr" class="yiv6532262222">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
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<div dir="ltr" class="yiv6532262222">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.
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<div dir="ltr" class="yiv6532262222">Does anyone know of a way to do this in GATE?<br clear="none" class="yiv6532262222">
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<div dir="ltr" class="yiv6532262222">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
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<div dir="ltr" class="yiv6532262222">Still, I would like to ask the group for their input if there are other better ways to approach the issue.
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<div dir="ltr" class="yiv6532262222">Thank you for your consideration, <br clear="none" class="yiv6532262222">
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<div dir="ltr" class="yiv6532262222">-Larry Pierce<br clear="none" class="yiv6532262222">
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<div dir="ltr" class="yiv6532262222">_______________________________________________<br clear="none" class="yiv6532262222">
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