<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0in;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";}
span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:"Courier New";}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>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>/----------------------------------------------------------------------------------------------------------<br><br></p><pre>Hi,</pre><pre><o:p> </o:p></pre><pre>you should take Mo-99, i.e. Z=42, A=99 instead, since Tc-99m</pre><pre>is part of the Mo-99 decay scheme. I have just tried it with</pre><pre>the Spectro-example of EduGATE and it gives a useful spectrum!</pre><pre><o:p> </o:p></pre><pre>Also, if you use the physicslist mechanism for the physical processes you need to add:</pre><pre><o:p> </o:p></pre><pre>/gate/physics/addPhysicsList emstandard</pre><pre>/gate/physics/addProcess RadioactiveDecay</pre><pre><o:p> </o:p></pre><pre>Hope this is helpful for you!</pre><pre><o:p> </o:p></pre><pre>Kind regards,</pre><pre><o:p> </o:p></pre><pre>Uwe Pietrzyk</pre><pre><o:p> </o:p></pre><pre>/----------------------------------------------------------------------</pre><pre>Prof. Dr. Uwe Pietrzyk</pre><pre>Diplom-Physiker</pre><pre>Institut für Neurowissenschaften und Medizin / INM-4</pre><pre>Forschungszentrum Jülich GmbH</pre><pre>52425 Jülich</pre><pre>Tel: +49-2461-61 4763</pre><pre>Fax: +49-2461-61 2820</pre><pre>Mobil: +49-162-103-4871</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>></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></pre><pre>&</pre><pre>Bergische Universität Wuppertal</pre><pre>Fachbereich C - Physik / D.08.01</pre><pre>Gaußstr. 20</pre><pre>42097 Wuppertal</pre><pre>Tel: +49-(0)202-439-3523</pre><pre>Fax: +49-(0)202-439-2811</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>></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>></pre><pre>----------------------------------------------------------------------/</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:</pre><pre><o:p> </o:p></pre><pre>Dear Gate-users,</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:</pre><pre><o:p> </o:p></pre><pre>/gate/source/SourceTC99m/gps/particle ion</pre><pre>/gate/source/SourceTC99m/gps/ion 43 99 0 142.6833</pre><pre>/gate/source/SourceTC99m/gps/monoenergy 0 keV</pre><pre>/gate/source/SourceTC99m/setForcedUnstableFlag true</pre><pre>/gate/source/SourceTC99m/setForcedHalfLife 21640 s</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.</pre><pre><o:p> </o:p></pre><pre>I really appreciate if somebody could share his/her experience on similar problems.</pre><pre><o:p> </o:p></pre><pre>My best regards,</pre><pre>Monica</pre><p class=MsoNormal><o:p> </o:p></p></div></body></html>