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<div>Hi Debora,</div>
<div><br>
</div>
<div>in the GATE manual it written like this: </div>
<div><br>
</div>
<div>
<div style="margin: 0px;">In the case of ions, the kinetic energy must be 0 since the ions are at rest:</div>
</div>
<div style="margin: 0px;">
<div style="margin: 0px;">/gate/source/NAME/gps/monoenergy 0. ev</div>
<div style="margin: 0px;"><br>
</div>
<div style="margin: 0px;">i.e., this is the energy of the ion!!</div>
<div style="margin: 0px;"><br>
</div>
<div style="margin: 0px;">Concerning the half-life, you should use the proper value for the particular</div>
<div style="margin: 0px;">isotope. In my example, with the intention to show the energy spectra, the</div>
<div style="margin: 0px;">half-life is not relevant and the value I used was the easiest solution ;-))</div>
<div style="margin: 0px;"><br>
</div>
<div style="margin: 0px;">Concerning the line:</div>
<div style="margin: 0px;"><br>
</div>
<div style="margin: 0px;">/gate/source/IonSource/gps/number <span class="Apple-tab-span" style="white-space:pre">
</span>1</div>
<div style="margin: 0px;"><br>
</div>
<div style="margin: 0px;">I cannot help you, sorry, but maybe it simply belongs to the definition</div>
<div style="margin: 0px;">of the “gps”, the general particle source, taken over from GEANT4.</div>
<div style="margin: 0px;"><br>
</div>
<div style="margin: 0px;">Maybe, some experts can explain it to us.</div>
</div>
<div><br>
</div>
Kind regards and best wishes,
<div><br>
</div>
<div>Uwe<br>
<div>
<div><span style="orphans: 2; widows: 2;">/----------------------------------------------------------------------</span></div>
<div style="orphans: 2; widows: 2;">Prof. Dr. Uwe Pietrzyk<br>
Diplom-Physiker<br>
Institut für Neurowissenschaften und Medizin / INM-4<br>
Forschungszentrum Jülich GmbH<br>
52425 Jülich<br>
Tel: +49-2461-61 4763<br>
Fax: +49-2461-61 2820<br>
Mobil: +49-162-103-4871<br>
eMail: <a href="mailto:U.Pietrzyk@fz-juelich.de">U.Pietrzyk@fz-juelich.de</a><br>
<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><br>
&<br>
Bergische Universität Wuppertal<br>
Fachbereich C - Physik / D.08.01<br>
Gaußstr. 20<br>
42097 Wuppertal<br>
Tel: +49-(0)202-439-3523<br>
Fax: +49-(0)202-439-2811<br>
eMail: <a href="mailto:Uwe.Pietrzyk@physik.uni-wuppertal.de">Uwe.Pietrzyk@physik.uni-wuppertal.de</a><br>
<a href="http://www.medizinphysik.uni-wuppertal.de/">http://www.medizinphysik.uni-wuppertal.de</a><br>
----------------------------------------------------------------------/</div>
</div>
<br>
<div>
<div>On 14 Jan 2015, at 17:17, Débora Salvado <<a href="mailto:debbiesal@gmail.com">debbiesal@gmail.com</a>> wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">
<div dir="ltr">
<div>Thanks, it helps a lot!<br>
<br>
</div>
<div>Can I just ask you a couple more questions?<br>
<br>
<div>/gate/source/IonSource/setForcedHalfLife <span style="white-space:pre-wrap">
</span>99999999.0 s <b>-->should I leave this without any number or set it to my radionuclide's half-life?</b><br>
</div>
<div></div>
<div>/gate/source/IonSource/gps/monoenergy <span style="white-space:pre-wrap"></span>0. MeV
<b>-->is this the energy of the photopeak?</b><br>
</div>
<div>/gate/source/IonSource/gps/number <span style="white-space:pre-wrap"></span>1
<b>-->what number does this refer to?</b><br>
</div>
<br>
</div>
<div class="gmail_extra">Regards,<br clear="all">
<div>
<div class="gmail_signature">Débora Salvado</div>
</div>
<br>
<br>
<br>
<div class="gmail_quote">2015-01-14 15:59 GMT+00:00 Pietrzyk, Uwe <span dir="ltr">
<<a href="mailto:u.pietrzyk@fz-juelich.de" target="_blank">u.pietrzyk@fz-juelich.de</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div style="word-wrap:break-word">
<div><br>
</div>
Hi Debora,
<div><br>
</div>
<div>for Isotopes like In-111 or I-123 you should use the ion as the particle in</div>
<div>the source description and leave the energy type as Mono.</div>
<div><br>
</div>
<div>See also the attached macro, which I used for the EduGATE - Spectro example.</div>
<div>I also copy the macro here in case there is a problem with attachments,</div>
<div>while sending a reply to the “gate-user-list”.</div>
<div>(The aliases like {Ion_Z_val} and {Ion_A_val}, etc are replaced by the selection </div>
<div>from the menu of the GUI running the example as shown in the Readme).</div>
<div><br>
</div>
<div>Hope this is helpful for you,</div>
<div><br>
</div>
<div>Kind regards,</div>
<div><br>
</div>
<div>Uwe Pietrzyk</div>
<div>-----------------------------------------------------------------------------------------------</div>
<div>
<div>#</div>
<div>#<span style="white-space:pre-wrap"> </span>S O U R C E S</div>
<div>#</div>
<div><br>
</div>
<div># source: ion</div>
<div>/gate/source/addSource <span style="white-space:pre-wrap"></span> IonSource</div>
<div><br>
</div>
<div>/gate/source/IonSource/setActivity <span style="white-space:pre-wrap"></span> {SourceActivity}</div>
<div><br>
</div>
<div><br>
</div>
<div>/gate/source/IonSource/gps/type<span style="white-space:pre-wrap"> </span>Volume</div>
<div>/gate/source/IonSource/gps/shape<span style="white-space:pre-wrap"> </span>Sphere</div>
<div>#/gate/source/IonSource/gps/radius<span style="white-space:pre-wrap"> </span>
0.1 mm</div>
<div>/gate/source/IonSource/gps/radius<span style="white-space:pre-wrap"> </span>
{SourceRad}</div>
<div>/gate/source/IonSource/gps/centre <span style="white-space:pre-wrap"></span>0.0 0.0 0.0 cm</div>
<div><br>
</div>
<div>##</div>
<div>## universal ion source</div>
<div>## with arbitrary halflife</div>
<div>##</div>
<div>/gate/source/IonSource/gps/particle<span style="white-space:pre-wrap"> </span>
ion</div>
<div>/gate/source/IonSource/gps/ion <span style="white-space:pre-wrap"></span>{Ion_Z_val} {Ion_A_val} 0 0</div>
<div>/gate/source/IonSource/setForcedUnstableFlag <span style="white-space:pre-wrap">
</span>true</div>
<div>/gate/source/IonSource/setForcedHalfLife <span style="white-space:pre-wrap">
</span>99999999.0 s</div>
<div>/gate/source/IonSource/gps/energytype <span style="white-space:pre-wrap"></span>Mono</div>
<div>/gate/source/IonSource/gps/monoenergy <span style="white-space:pre-wrap"></span>0. MeV</div>
<div>/gate/source/IonSource/gps/number <span style="white-space:pre-wrap"></span>1</div>
<div><br>
</div>
<div>/gate/source/IonSource/gps/angtype<span style="white-space:pre-wrap"> </span>
iso</div>
<div>/gate/source/IonSource/gps/mintheta<span style="white-space:pre-wrap"> </span>
0. deg</div>
<div>/gate/source/IonSource/gps/maxtheta <span style="white-space:pre-wrap"></span>180. deg</div>
<div>/gate/source/IonSource/gps/minphi <span style="white-space:pre-wrap"></span>0. deg</div>
<div>/gate/source/IonSource/gps/maxphi <span style="white-space:pre-wrap"></span>360. deg</div>
<div><br>
</div>
<div>/gate/source/list</div>
<div><br>
</div>
<div>#/gate/source/IonSource/gps/confine <span style="white-space:pre-wrap"></span>source_vol</div>
<div><br>
</div>
<div><br>
</div>
<div>
<div><span>/----------------------------------------------------------------------</span></div>
<div>Prof. Dr. Uwe Pietrzyk<br>
Diplom-Physiker<br>
Institut für Neurowissenschaften und Medizin / INM-4<br>
Forschungszentrum Jülich GmbH<br>
52425 Jülich<br>
Tel: <a href="tel:%2B49-2461-61%204763" value="+492461614763" target="_blank">+49-2461-61 4763</a><br>
Fax: <a href="tel:%2B49-2461-61%202820" value="+492461612820" target="_blank">+49-2461-61 2820</a><br>
Mobil: <a href="tel:%2B49-162-103-4871" value="+491621034871" target="_blank">+49-162-103-4871</a><br>
eMail: <a href="mailto:U.Pietrzyk@fz-juelich.de" target="_blank">U.Pietrzyk@fz-juelich.de</a><br>
<a href="http://www.fz-juelich.de/inm/inm-4/DE/Home/home_node.html" target="_blank">http://www.fz-juelich.de/inm/inm-4/DE/Home/home_node.html</a><br>
&<br>
Bergische Universität Wuppertal<br>
Fachbereich C - Physik / D.08.01<br>
Gaußstr. 20<br>
42097 Wuppertal<br>
Tel: <a href="tel:%2B49-%280%29202-439-3523" value="+492024393523" target="_blank">
+49-(0)202-439-3523</a><br>
Fax: <a href="tel:%2B49-%280%29202-439-2811" value="+492024392811" target="_blank">
+49-(0)202-439-2811</a><br>
eMail: <a href="mailto:Uwe.Pietrzyk@physik.uni-wuppertal.de" target="_blank">Uwe.Pietrzyk@physik.uni-wuppertal.de</a><br>
<a href="http://www.medizinphysik.uni-wuppertal.de/" target="_blank">http://www.medizinphysik.uni-wuppertal.de</a><br>
----------------------------------------------------------------------/</div>
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<div>
<div class="h5">
<div>On 14 Jan 2015, at 16:24, D�bora Salvado <<a href="mailto:debbiesal@gmail.com" target="_blank">debbiesal@gmail.com</a>> wrote:</div>
<br>
</div>
</div>
<blockquote type="cite">
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<div class="h5">
<div dir="ltr">
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<div>Dear GATE users,<br>
<br>
</div>
How should I define the energy type for I-123 and In-111 in my SPECT simulations?<br>
<br>
</div>
For Tc-99m, I'm using :<br>
</div>
particle gamma<br>
</div>
energytype Mono<br>
</div>
monoenergy 141. keV<br>
</div>
setForcedHalfLife 6. h<br>
<br>
</div>
but In-111 has two photopeaks (171 and 245 keV) and I-123 has a significant amount of photons (abundance 3.1%) with a higher energy than the photopeak (159 keV), so I'm not sure how to define my source in either of the cases, I-123 and In-111.<br>
<br>
</div>
Thanks.<br clear="all">
<div>
<div>
<div>Debora Salvado</div>
</div>
</div>
</div>
</div>
</div>
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