Hi Joon,<br><br>Display is just display, not very faithful ... Have you got the same results in your root results (or other kind of output results) ??<br>I don't see any attenuation volume in your display, did you build some ?? Because the 'confine' macro command is usually used to fix an 'activity volume' to a geometrical volume (assigned with a material) that is moving during the simulation. You have defined some cylindrical shape activity volume but in your display, its look like that it is a point source 'volume'. What is your complete macro file ?
<br><br>Cheers,<br>Simon<br><br><div><span class="gmail_quote">2007/12/7, Joon Young Suk <<a href="mailto:joonyoung.suk@gmail.com">joonyoung.suk@gmail.com</a>>:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div style=""><div><blockquote type="cite"><br><div><blockquote type="cite"><div style="margin: 0px; min-height: 14px;"><br></div> <div style="margin: 0px;">Hi all,</div><div style="margin: 0px;">I am trying to simulate the scan with a cylindrical phantom which as two rod source inside.
</div><div style="margin: 0px;">I built two rod sources with cylindrical geometry and set the angle type as "iso".</div><div style="margin: 0px;">I think the LORs should be randomly distributed through all 4pi angle, but the simulation doesn't look like that.
</div><div style="margin: 0px; min-height: 14px;"><br></div><div style="margin: 0px;">From the display during the simulation, I can see most LORs are lying horizontally on the centre plane.</div><div style="margin: 0px; min-height: 14px;">
<br></div><div style="margin: 0px;">Please check the image from the followed link :</div><div style="margin: 0px; min-height: 14px;"><br></div><div style="margin: 0px;"><a href="http://www.joonyoung.net/iso.jpg" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
http://www.joonyoung.net/iso.jpg</a></div><div style="margin: 0px; min-height: 14px;"><br></div><div style="margin: 0px;">Also, here is my code for the source part.</div><div style="margin: 0px; min-height: 14px;"><br></div>
<div style="margin: 0px;">Please, let me know what should I do to correct it and make real isotropic emission.</div><div style="margin: 0px; min-height: 14px;"><br></div><div style="margin: 0px;">Thanks,</div><div style="margin: 0px;">
Joon Young Suk<br></div><div style="margin: 0px; min-height: 14px;"><br></div><div style="margin: 0px;"># S O U R C E S</div><div style="margin: 0px;">/gate/source/addSource rodsource0</div><div style="margin: 0px;">###################################################################
</div><div style="margin: 0px;">/gate/source/rodsource0/setActivity {activity} becquerel</div><div style="margin: 0px;">/gate/source/rodsource0/setType backtoback</div><div style="margin: 0px;">/gate/source/rodsource0/gps/particle gamma
</div><div style="margin: 0px;">/gate/source/rodsource0/gps/energytype Mono</div><div style="margin: 0px;">/gate/source/rodsource0/gps/monoenergy 0.511 MeV</div><div style="margin: 0px;">/gate/source/rodsource0/gps/type Volume
</div><div style="margin: 0px;">/gate/source/rodsource0/gps/shape Cylinder</div><div style="margin: 0px;">/gate/source/rodsource0/gps/radius 0.5 mm</div><div style="margin: 0px;">/gate/source/rodsource0/gps/halfz 25.0 mm</div>
<div style="margin: 0px;">/gate/source/rodsource0/gps/centre {rod0Xposition} 0. 0. mm</div><div style="margin: 0px;">/gate/source/rodsource1/gps/angtype iso</div><div style="margin: 0px;">/gate/source/rodsource0/gps/confine rod0_P
</div><div style="margin: 0px; min-height: 14px;"><br></div><div style="margin: 0px;">/gate/source/addSource rodsource1</div><div style="margin: 0px;">###################################################################</div>
<div style="margin: 0px;">/gate/source/rodsource1/setActivity {activity} becquerel</div><div style="margin: 0px;">/gate/source/rodsource1/setType backtoback</div><div style="margin: 0px;">/gate/source/rodsource1/gps/particle gamma
</div><div style="margin: 0px;">/gate/source/rodsource1/gps/energytype Mono</div><div style="margin: 0px;">/gate/source/rodsource1/gps/monoenergy 0.511 MeV</div><div style="margin: 0px;">/gate/source/rodsource1/gps/type Volume
</div><div style="margin: 0px;">/gate/source/rodsource1/gps/shape Cylinder</div><div style="margin: 0px;">/gate/source/rodsource1/gps/radius 0.5 mm</div><div style="margin: 0px;">/gate/source/rodsource1/gps/halfz 25.0 mm</div>
<div style="margin: 0px;">/gate/source/rodsource1/gps/centre {rod1Xposition} 0. 0. mm</div><div style="margin: 0px;">/gate/source/rodsource1/gps/angtype iso</div><div style="margin: 0px;">/gate/source/rodsource1/gps/confine rod1_P
</div><div style="margin: 0px; min-height: 14px;"><br></div><div style="margin: 0px; min-height: 14px;"><br></div> </blockquote></div><br><div> <span style="border-collapse: separate; border-spacing: 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px;">
<div><font size="3"><span style="font-size: 12px;"><span style="font-size: 12px;">Joon Young Suk</span></span></font></div><div><font size="3"><span style="font-size: 12px;"><span style="font-size: 12px;">Brain Research Centre
</span></span></font></div><div style="font-size: 12px;"><font size="3"><span style="font-size: 12px;"><span style="font-size: 12px;">Dept. of Physics,</span></span></font></div><div style="font-size: 12px;"><font size="3">
<span style="font-size: 12px;"><span style="font-size: 12px;">University of British Columbia</span></span></font></div><div><font size="3"><span style="font-size: 12px;"><span style="font-size: 12px;">2211 Wesbrook Mall</span>
</span></font></div><div><font size="3"><span style="font-size: 12px;"><span style="font-size: 12px;">Vancouver, British Columbia</span></span></font></div><div><font size="3"><span style="font-size: 12px;"><span style="font-size: 12px;">
Canada, V6T 2B5</span></span></font></div><div><font size="3"><span style="font-size: 12px;"><br></span></font></div><div><font size="3"><span style="font-size: 12px;"><span style="font-size: 12px;"><a href="mailto:joon@physics.ubc.ca" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
joon@physics.ubc.ca</a></span></span></font></div><div><font size="3"><span style="font-size: 12px;"><span style="font-size: 12px;"><a href="mailto:joonyoung.suk@gmail.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
joonyoung.suk@gmail.com</a></span></span></font></div><div><font size="3"><span style="font-size: 12px;"><br></span></font></div><div><font size="3"><span style="font-size: 12px;"><span style="font-size: 12px;"><a href="http://www.joonyoung.net" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
http://www.joonyoung.net</a></span></span></font></div><div><br></div><div><br></div><br></span> </div><br></blockquote></div><br></div><br>_______________________________________________<br>Gate-users mailing list<br><a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:Gate-users@lists.healthgrid.org">
Gate-users@lists.healthgrid.org</a><br><a onclick="return top.js.OpenExtLink(window,event,this)" href="http://lists.healthgrid.org/mailman/listinfo/gate-users" target="_blank">http://lists.healthgrid.org/mailman/listinfo/gate-users
</a><br><br></blockquote></div><br>