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<p class="MsoNormal">Gate Users,<o:p></o:p></p>
<p class="MsoNormal">Is there any update on this? Simulation of Tc99m without going through Mo-99 decay?<o:p></o:p></p>
<p class="MsoNormal">What is the best practice for this situation?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">-josh<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> Gate-users <gate-users-bounces@lists.opengatecollaboration.org>
<b>On Behalf Of </b>Christopher Watanabe<br>
<b>Sent:</b> Thursday, January 30, 2020 3:53 PM<br>
<b>To:</b> gate-users@lists.opengatecollaboration.org<br>
<b>Subject:</b> Re: [Gate-users] GATE 7 metastable source definition<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">Hi all, <br>
<br>
I was wondering, given that the original post here was 5 years ago, whether methods now exist for simulating the metastable Tc99m, without simulating the Mo-99 decay scheme. This, for a Tc99m SPECT imaging simulation.<br>
<br>
I realize in the GATE examples, this is simulated using a pure gamma, but I’m interested in checking the dose, minimal though it may be, of tissue as well.
<br>
<br>
Thank you! <br>
<br>
Chris<br>
<br>
/----------------------------------------------------------------------------------------------------------<o:p></o:p></p>
<pre>Hi,<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>you should take Mo-99, i.e. Z=42, A=99 instead, since Tc-99m<o:p></o:p></pre>
<pre>is part of the Mo-99 decay scheme. I have just tried it with<o:p></o:p></pre>
<pre>the Spectro-example of EduGATE and it gives a useful spectrum!<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Also, if you use the physicslist mechanism for the physical processes you need to add:<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>/gate/physics/addPhysicsList emstandard<o:p></o:p></pre>
<pre>/gate/physics/addProcess RadioactiveDecay<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Hope this is helpful for you!<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Kind regards,<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Uwe Pietrzyk<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>/----------------------------------------------------------------------<o:p></o:p></pre>
<pre>Prof. Dr. Uwe Pietrzyk<o:p></o:p></pre>
<pre>Diplom-Physiker<o:p></o:p></pre>
<pre>Institut für Neurowissenschaften und Medizin / INM-4<o:p></o:p></pre>
<pre>Forschungszentrum Jülich GmbH<o:p></o:p></pre>
<pre>52425 Jülich<o:p></o:p></pre>
<pre>Tel: +49-2461-61 4763<o:p></o:p></pre>
<pre>Fax: +49-2461-61 2820<o:p></o:p></pre>
<pre>Mobil: +49-162-103-4871<o:p></o:p></pre>
<pre>eMail: <a href="http://lists.opengatecollaboration.org/mailman/listinfo/gate-users">U.Pietrzyk at fz-juelich.de</a><mailto:<a href="http://lists.opengatecollaboration.org/mailman/listinfo/gate-users">U.Pietrzyk at fz-juelich.de</a>><o:p></o:p></pre>
<pre><a href="http://www.fz-juelich.de/inm/inm-4/DE/Home/home_node.html">http://www.fz-juelich.de/inm/inm-4/DE/Home/home_node.html</a><o:p></o:p></pre>
<pre>&<o:p></o:p></pre>
<pre>Bergische Universität Wuppertal<o:p></o:p></pre>
<pre>Fachbereich C - Physik / D.08.01<o:p></o:p></pre>
<pre>Gaußstr. 20<o:p></o:p></pre>
<pre>42097 Wuppertal<o:p></o:p></pre>
<pre>Tel: +49-(0)202-439-3523<o:p></o:p></pre>
<pre>Fax: +49-(0)202-439-2811<o:p></o:p></pre>
<pre>eMail: <a href="http://lists.opengatecollaboration.org/mailman/listinfo/gate-users">Uwe.Pietrzyk at physik.uni-wuppertal.de</a><mailto:<a href="http://lists.opengatecollaboration.org/mailman/listinfo/gate-users">Uwe.Pietrzyk at physik.uni-wuppertal.de</a>><o:p></o:p></pre>
<pre><a href="http://www.medizinphysik.uni-wuppertal.de%3chttp:/www.medizinphysik.uni-wuppertal.de/">http://www.medizinphysik.uni-wuppertal.de<http://www.medizinphysik.uni-wuppertal.de/</a>><o:p></o:p></pre>
<pre>----------------------------------------------------------------------/<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>On 30 Jan 2015, at 21:17, Xinchi Hou <<a href="http://lists.opengatecollaboration.org/mailman/listinfo/gate-users">monicaxinchi at gmail.com</a><mailto:<a href="http://lists.opengatecollaboration.org/mailman/listinfo/gate-users">monicaxinchi at gmail.com</a>>> wrote:<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Dear Gate-users,<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>I am using GATE 7 for SPECT simulations. For some reason, GATE 7 seems can not recognize metastable source by defining an ion source (shows below,Tc-99m as an example), which can be successfully run by GATE 6.1:<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>/gate/source/SourceTC99m/gps/particle ion<o:p></o:p></pre>
<pre>/gate/source/SourceTC99m/gps/ion 43 99 0 142.6833<o:p></o:p></pre>
<pre>/gate/source/SourceTC99m/gps/monoenergy 0 keV<o:p></o:p></pre>
<pre>/gate/source/SourceTC99m/setForcedUnstableFlag true<o:p></o:p></pre>
<pre>/gate/source/SourceTC99m/setForcedHalfLife 21640 s<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>I know we can define 140keV gamma as a source instead of using ion source. However, I need to use many of other metastable isotopes as sources which usually have multiple gamma energies for each of them.<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>I really appreciate if somebody could share his/her experience on similar problems.<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>My best regards,<o:p></o:p></pre>
<pre>Monica<o:p></o:p></pre>
<p class="MsoNormal"><o:p> </o:p></p>
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