<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Hello Maryam Fallahpoor,</div><div class=""><br class=""></div><div class="">the lines below show how I usually specify an ion-source.</div><div class="">In this case it is for I-131:</div><div class=""><div class=""><br class=""></div><div class=""><div class="">## Iodine-131</div><div class="">/gate/source/IonSource/gps/particle<span class="Apple-tab-span" style="white-space: pre;"> </span>ion</div><div class="">/gate/source/IonSource/gps/ion <span class="Apple-tab-span" style="white-space: pre;"> </span>53 131 0 0</div><div class="">/gate/source/IonSource/setForcedUnstableFlag <span class="Apple-tab-span" style="white-space: pre;"> </span>true</div><div class="">/gate/source/IonSource/setForcedHalfLife <span class="Apple-tab-span" style="white-space: pre;"> </span>692988.48 s</div><div class="">/gate/source/IonSource/gps/energytype <span class="Apple-tab-span" style="white-space: pre;"> </span>Mono</div><div class="">/gate/source/IonSource/gps/monoenergy <span class="Apple-tab-span" style="white-space: pre;"> </span>0. MeV</div><div class="">/gate/source/IonSource/setActivity <span class="Apple-tab-span" style="white-space: pre;"> </span>{SourceActivity}</div></div></div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">So in your case you have to modify accordingly for Ga-68</div><div class=""><br class=""></div><div class="">31 68 0 0</div><div class=""><br class=""></div><div class="">and</div><div class=""><br class=""></div><div class=""><span style="font-family: sans-serif; font-size: 12.600000381469727px; background-color: rgb(245, 245, 245);" class="">Halflife67,629 </span><a href="https://de.wikipedia.org/wiki/Minute" title="Minute" style="text-decoration: none; color: rgb(11, 0, 128); background-image: none; font-family: sans-serif; font-size: 12.600000381469727px;" class="">min</a></div><div class=""><br class=""></div><div class=""><b class="">However</b> I don’t exactly know, whether you can use an ion-source</div><div class="">for voxelized sources / phantoms at all.</div><div class="">I haven’t found any example, <b class="">only</b> those for back-to-back,</div><div class="">i.e. two collinear photons / gamma at 511 keV, for example</div><div class="">to faster simulate the positron-electron annihilation.</div><div class=""><br class=""></div><div class="">I hope this is helpful, nevertheless.</div><div class=""><br class=""></div><div class="">Kind regards,</div><div class=""><br class=""></div><div class="">Uwe Pietrzyk</div><br class=""><div class="">
<div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;">/----------------------------------------------------------------------<br class="">Prof. Dr. Uwe Pietrzyk<br class="">Diplom-Physiker<br class="">Institut für Neurowissenschaften und Medizin / INM-4<br class="">Forschungszentrum Jülich GmbH<br class="">52425 Jülich<br class="">Tel: +49-2461-61 4763<br class="">Fax: +49-2461-61 2820<br class="">Mobil: +49-162-103-4871<br class="">eMail: <a href="mailto:U.Pietrzyk@fz-juelich.de" class="">U.Pietrzyk@fz-juelich.de</a><br class=""><a href="http://www.fz-juelich.de/inm/inm-4/DE/Home/home_node.html" class="">http://www.fz-juelich.de/inm/inm-4/DE/Home/home_node.html</a><br class="">&<br class="">Bergische Universität Wuppertal<br class="">Fakultät für Mathematik und Naturwissenschaften<br class="">Büro: D.08.01<br class="">Gaußstr. 20<br class="">42097 Wuppertal<br class="">Tel: +49-(0)202-439-3523<br class="">Fax: +49-(0)202-439-2811<br class="">eMail: Uwe.Pietrzyk@uni-wuppertal.de<br class="">http://www.medizinphysik.uni-wuppertal.de<br class="">----------------------------------------------------------------------/</div>
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<br class=""><div><blockquote type="cite" class=""><div class="">On 14. Aug 2017, at 16:10, Maryam Fallahpoor <<a href="mailto:maryam.fallahpoor@yahoo.com" class="">maryam.fallahpoor@yahoo.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div class=""><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;" class=""><div class=""><div class=""><span style="color: rgb(38, 40, 42);" class="">Dear gate-users,</span><br class=""></div></div><div id="ydpae06a5a3yahoo_quoted_2808087352" class="ydpae06a5a3yahoo_quoted"><div style="font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;font-size:13px;color:#26282a;" class=""><div class=""><div id="ydpae06a5a3yiv7642817559" class=""><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;" class=""><div class=""><div style="color:rgb(38, 40, 42);" class="">I want to put Ga-68 as the source of activity for internal dosimetry. It is a positron emitter with<span style="color:rgb(34, 34, 34);font-size:15px;" class=""> multiple radiation type</span> such as gamma emission and electron capture. Can you help me how can I define such sources in my voxelizedsource? Or is there somewhere in GATE that I can define Ga-68?</div><div style="color:rgb(38, 40, 42);" class="">Thanks in advance, </div></div><div class=""><br class=""></div><div class="ydpae06a5a3yiv7642817559ydpf1858611signature">Maryam Fallahpoor<br class="">E-mail: <a href="mailto:maryam.fallahpoor@yahoo.com" class="">maryam.fallahpoor@yahoo.com</a></div></div></div></div></div></div></div></div>_______________________________________________<br class="">Gate-users mailing list<br class=""><a href="mailto:Gate-users@lists.opengatecollaboration.org" class="">Gate-users@lists.opengatecollaboration.org</a><br class="">http://lists.opengatecollaboration.org/mailman/listinfo/gate-users</div></blockquote></div><br class=""></body></html>