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<body class='hmmessage'><div dir='ltr'><pre><font color="#444444"><span style="font-size: 15px; line-height: 21px; white-space: normal;">Dear Gate users<br>I voxelize a phantom from a CT image, I started with a slice thickness of 2 mm<br><br>I studied three cases:<br>- A phantom with material- A phantom without material (filled with air)- No phantom <br>But the problem, I always find the same results even when I increase the thickness to 200. For the first case and the second and the last I find even just the number of photons scattered 0<br><br><br><br><br><br><br>I compare the simulation results of a cylinder filled with air and without cylinder I found a deference I do not know why<br><br><br><br><br><br>Do you have an explanation for this. <br><br><br><br>phantom and source files:<br><br><br><br># P H A N T O M<br><br><br><br><br><br>/gate/world/daughters/name HRRT_brain<br><br>/gate/world/daughters/insert parameterizedBoxMatrix<br><br>/gate/HRRT_brain/geometry/insertReader interfile<br><br>/gate/HRRT_brain/interfileReader/insertTranslatorrange<br><br>/gate/HRRT_brain/interfileReader/rangeTranslator/read Tablerange_atten_brain_original.dat<br><br>/gate/HRRT_brain/interfileReader/rangeTranslator/describe 1<br><br>/gate/HRRT_brain/interfileReader/readFile CT.h33<br><br>/gate/HRRT_brain/placement/setTranslation 0. 0. 0. mm<br><br>/gate/HRRT_brain/attachVoxelPhantomSD<br><br>/gate/endshielding/attachPhantomSD<br><br>/gate/HRRT_brain/verbose 2<br><br><br># Point Source<br><br>/gate/source/addSource F18LineSource<br><br>/gate/source/F18LineSource/setActivity 3700000. becquerel<br><br><br><br>/gate/source/F18LineSource/gps/particle e+ <br><br>/gate/source/F18LineSource/setForcedUnstableFlag true <br><br>/gate/source/F18LineSource/setForcedHalfLife 6586.2 s<br><br>/gate/source/F18LineSource/gps/energytype Fluor18<br><br>/gate/source/F18LineSource/gps/type Point <br><br>/gate/source/F18LineSource/gps/angtype iso<br><br>/gate/source/F18LineSource/gps/centre 0. 0. 0. mm<br><br>/gate/source/F18LineSource/dump 1<br><br><br>/gate/source/list<br><br><br>Many Thanks </span></font></pre><br><br> <br> <br> <br> <br> <br> <br> <br> <br><br><br><font color="#0000ff" size="5"><a href="http://www.bicoeur.com/" target="_blank"><br></a></font><br><font color="#0000ff" size="5"><a href="http://www.bicoeur.com/" target="_blank"><br></a></font><br> <br><br><br><br><div><div id="SkyDrivePlaceholder"></div>> From: gate-users-request@lists.opengatecollaboration.org<br>> Subject: Gate-users Digest, Vol 82, Issue 39<br>> To: gate-users@lists.opengatecollaboration.org<br>> Date: Mon, 25 Mar 2013 18:01:19 +0100<br>> <br>> Send Gate-users mailing list submissions to<br>> gate-users@lists.opengatecollaboration.org<br>> <br>> To subscribe or unsubscribe via the World Wide Web, visit<br>> http://lists.opengatecollaboration.org/mailman/listinfo/gate-users<br>> or, via email, send a message with subject or body 'help' to<br>> gate-users-request@lists.opengatecollaboration.org<br>> <br>> You can reach the person managing the list at<br>> gate-users-owner@lists.opengatecollaboration.org<br>> <br>> When replying, please edit your Subject line so it is more specific<br>> than "Re: Contents of Gate-users digest..."<br>> <br>> <br>> Today's Topics:<br>> <br>> 1. Probl?me dans les r?sultats de Gate (mariam zoubair)<br>> 2. Probl?me dans les r?sultats de Gate (mariam zoubair)<br>> 3. Probl?me dans les r?sultats de Gate (mariam zoubair)<br>> <br>> <br>> ----------------------------------------------------------------------<br>> <br>> Message: 1<br>> Date: Mon, 25 Mar 2013 14:37:24 +0000<br>> From: mariam zoubair <zoubair-mariam@hotmail.fr><br>> To: "gate-users@lists.opengatecollaboration.org"<br>> <gate-users@lists.opengatecollaboration.org><br>> Subject: [Gate-users] Probl?me dans les r?sultats de Gate<br>> Message-ID: <DUB118-W229785AABE318D865BD6DBF4D70@phx.gbl><br>> Content-Type: text/plain; charset="windows-1252"<br>> <br>> <br>> <br>> <br>> <br>> <br>> Dear Gate users<br>> <br>> Je voxelize un fant?me<br>> ? partir d?une image CT, j?ai commenc? avec une tanche d?une ?paisseur 2mm pour<br>> ester Gate<br>> <br>> J?ai ?tudi? 3 cas :<br>> <br>> <br>> - <br>> Un fant?me<br>> avec mat?riau <br>> <br>> - <br>> Un fant?me<br>> sans mat?riau (remplie par l?air) <br>> <br>> - <br>> Sans fant?me<br>> <br>> <br>> <br>> Mais le probl?me je trouve toujours m?me <br>> r?sultats m?me lorsque j?augmente l??paisseur ? 200. <br>> <br>> <br>> Est-ce que vous avez une explication<br>> de cela. <br>> <br>> <br>> <br>> Les fichiers de fant?me et source :<br>> <br>> <br>> <br>> # P H A N T O M<br>> <br>> <br>> <br>> <br>> <br>> /gate/world/daughters/name HRRT_brain<br>> <br>> /gate/world/daughters/insert parameterizedBoxMatrix<br>> <br>> /gate/HRRT_brain/geometry/insertReader interfile<br>> <br>> /gate/HRRT_brain/interfileReader/insertTranslator<br>> range<br>> <br>> /gate/HRRT_brain/interfileReader/rangeTranslator/readTable<br>> range_atten_brain_original.dat<br>> <br>> /gate/HRRT_brain/interfileReader/rangeTranslator/describe<br>> 1<br>> <br>> /gate/HRRT_brain/interfileReader/readFile CT.h33<br>> <br>> /gate/HRRT_brain/placement/setTranslation 0. 0. 0.<br>> mm<br>> <br>> /gate/HRRT_brain/attachVoxelPhantomSD<br>> <br>> /gate/endshielding/attachPhantomSD<br>> <br>> /gate/HRRT_brain/verbose 2<br>> <br>> <br>> <br>> # Point Source<br>> <br>> /gate/source/addSource<br>> F18LineSource<br>> <br>> /gate/source/F18LineSource/setActivity<br>> 3700000. becquerel<br>> <br>> <br>> <br>> /gate/source/F18LineSource/gps/particle<br>> e+ <br>> <br>> /gate/source/F18LineSource/setForcedUnstableFlag<br>> true <br>> <br>> /gate/source/F18LineSource/setForcedHalfLife<br>> 6586.2 s<br>> <br>> /gate/source/F18LineSource/gps/energytype<br>> Fluor18<br>> <br>> /gate/source/F18LineSource/gps/type Point <br>> <br>> /gate/source/F18LineSource/gps/angtype<br>> iso<br>> <br>> /gate/source/F18LineSource/gps/centre<br>> 0. 0. 0. mm<br>> <br>> /gate/source/F18LineSource/dump<br>> 1<br>> <br>> #/gate/source/F18LineSource/visualize<br>> 2000 red 5 <br>> <br>> <br>> <br>> /gate/source/list<br>> <br>> <br>> <br>> <br>> Many Thanks <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> -------------- next part --------------<br>> An HTML attachment was scrubbed...<br>> URL: <http://lists.opengatecollaboration.org/mailman/private/gate-users/attachments/20130325/d5e23510/attachment-0001.html><br>> <br>> ------------------------------<br>> <br>> Message: 2<br>> Date: Mon, 25 Mar 2013 15:03:33 +0000<br>> From: mariam zoubair <zoubair-mariam@hotmail.fr><br>> To: "gate-users@lists.opengatecollaboration.org"<br>> <gate-users@lists.opengatecollaboration.org><br>> Subject: [Gate-users] Probl?me dans les r?sultats de Gate<br>> Message-ID: <DUB118-W482A8D9DC9C919EC31C65CF4D70@phx.gbl><br>> Content-Type: text/plain; charset="windows-1252"<br>> <br>> Dear Gate users<br>> <br>> <br>> Je voxelize un fant?me<br>> ? partir d?une image CT, j?ai commenc? avec une tanche d?une ?paisseur 2mm pour<br>> ester Gate<br>> <br>> J?ai ?tudi? 3 cas :<br>> <br>> <br>> - Un fant?me<br>> avec mat?riau <br>> <br>> - <br>> Un fant?me<br>> sans mat?riau (remplie par l?air) <br>> <br>> - <br>> Sans fant?me<br>> <br>> <br>> <br>> Mais le probl?me je trouve toujours m?me <br>> r?sultats m?me lorsque j?augmente l??paisseur ? 200. Pour le<br>> premier cas et deuxi?me et pour la derni?re je trouve le m?me juste le nombre des<br>> photons diffus?s ?gal ? 0 <br>> <br>> Est-ce que vous avez une explication<br>> de cela. <br>> <br>> <br>> <br>> Les fichiers de fant?me et source :<br>> <br>> <br>> <br>> # P H A N T O M<br>> <br>> <br>> <br>> <br>> <br>> /gate/world/daughters/name HRRT_brain<br>> <br>> /gate/world/daughters/insert parameterizedBoxMatrix<br>> <br>> /gate/HRRT_brain/geometry/insertReader interfile<br>> <br>> /gate/HRRT_brain/interfileReader/insertTranslator<br>> range<br>> <br>> /gate/HRRT_brain/interfileReader/rangeTranslator/readTable<br>> range_atten_brain_original.dat<br>> <br>> /gate/HRRT_brain/interfileReader/rangeTranslator/describe<br>> 1<br>> <br>> /gate/HRRT_brain/interfileReader/readFile CT.h33<br>> <br>> /gate/HRRT_brain/placement/setTranslation 0. 0. 0.<br>> mm<br>> <br>> /gate/HRRT_brain/attachVoxelPhantomSD<br>> <br>> /gate/endshielding/attachPhantomSD<br>> <br>> /gate/HRRT_brain/verbose 2<br>> <br>> <br>> <br>> # Point Source<br>> <br>> /gate/source/addSource<br>> F18LineSource<br>> <br>> /gate/source/F18LineSource/setActivity<br>> 3700000. becquerel<br>> <br>> <br>> <br>> /gate/source/F18LineSource/gps/particle<br>> e+ <br>> <br>> /gate/source/F18LineSource/setForcedUnstableFlag<br>> true <br>> <br>> /gate/source/F18LineSource/setForcedHalfLife<br>> 6586.2 s<br>> <br>> /gate/source/F18LineSource/gps/energytype<br>> Fluor18<br>> <br>> /gate/source/F18LineSource/gps/type Point <br>> <br>> /gate/source/F18LineSource/gps/angtype<br>> iso<br>> <br>> /gate/source/F18LineSource/gps/centre<br>> 0. 0. 0. mm<br>> <br>> /gate/source/F18LineSource/dump<br>> 1<br>> <br>> #/gate/source/F18LineSource/visualize<br>> 2000 red 5 <br>> <br>> <br>> <br>> /gate/source/list<br>> <br>> <br>> <br>> <br>> Many Thanks <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> -------------- next part --------------<br>> An HTML attachment was scrubbed...<br>> URL: <http://lists.opengatecollaboration.org/mailman/private/gate-users/attachments/20130325/e44455d9/attachment-0001.html><br>> <br>> ------------------------------<br>> <br>> Message: 3<br>> Date: Mon, 25 Mar 2013 17:02:25 +0000<br>> From: mariam zoubair <zoubair-mariam@hotmail.fr><br>> To: "gate-users@lists.opengatecollaboration.org"<br>> <gate-users@lists.opengatecollaboration.org><br>> Subject: [Gate-users] Probl?me dans les r?sultats de Gate<br>> Message-ID: <DUB118-W3914BABC3A38F42D67EA38F4D70@phx.gbl><br>> Content-Type: text/plain; charset="iso-8859-1"<br>> <br>> Dear Gate users<br>> I voxelize a phantom from a CT image, I started with a slice thickness of 2mm<br>> <br>> I studied three cases:<br>> - A phantom with material- A phantom without material (filled with air)- No phantom <br>> But the problem, I always find the same results even when I increase the thickness to 200. For the first case and the second and the last I find even just the number of photons scattered 0<br>> <br>> <br>> <br>> <br>> <br>> <br>> I compare the simulation results of a cylinder filled with air and without cylinder I found a defference. I do not know why<br>> <br>> <br>> <br>> <br>> <br>> Do you have an explanation for this. <br>> <br>> <br>> <br>> phantom and source files:<br>> <br>> <br>> <br>> # P H A N T O M<br>> <br>> <br>> <br>> <br>> <br>> /gate/world/daughters/name HRRT_brain<br>> <br>> /gate/world/daughters/insert parameterizedBoxMatrix<br>> <br>> /gate/HRRT_brain/geometry/insertReader interfile<br>> <br>> /gate/HRRT_brain/interfileReader/insertTranslator<br>> range<br>> <br>> /gate/HRRT_brain/interfileReader/rangeTranslator/readTable<br>> range_atten_brain_original.dat<br>> <br>> /gate/HRRT_brain/interfileReader/rangeTranslator/describe<br>> 1<br>> <br>> /gate/HRRT_brain/interfileReader/readFile CT.h33<br>> <br>> /gate/HRRT_brain/placement/setTranslation 0. 0. 0.<br>> mm<br>> <br>> /gate/HRRT_brain/attachVoxelPhantomSD<br>> <br>> /gate/endshielding/attachPhantomSD<br>> <br>> /gate/HRRT_brain/verbose 2<br>> <br>> <br>> <br>> # Point Source<br>> <br>> /gate/source/addSource<br>> F18LineSource<br>> <br>> /gate/source/F18LineSource/setActivity<br>> 3700000. becquerel<br>> <br>> <br>> <br>> /gate/source/F18LineSource/gps/particle<br>> e+ <br>> <br>> /gate/source/F18LineSource/setForcedUnstableFlag<br>> true <br>> <br>> /gate/source/F18LineSource/setForcedHalfLife<br>> 6586.2 s<br>> <br>> /gate/source/F18LineSource/gps/energytype<br>> Fluor18<br>> <br>> /gate/source/F18LineSource/gps/type Point <br>> <br>> /gate/source/F18LineSource/gps/angtype<br>> iso<br>> <br>> /gate/source/F18LineSource/gps/centre<br>> 0. 0. 0. mm<br>> <br>> /gate/source/F18LineSource/dump<br>> 1<br>> <br>> #/gate/source/F18LineSource/visualize<br>> 2000 red 5 <br>> <br>> <br>> <br>> /gate/source/list<br>> <br>> <br>> <br>> <br>> Many Thanks <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> <br>> -------------- next part --------------<br>> An HTML attachment was scrubbed...<br>> URL: <http://lists.opengatecollaboration.org/mailman/private/gate-users/attachments/20130325/893480dd/attachment.html><br>> <br>> ------------------------------<br>> <br>> _______________________________________________<br>> Gate-users mailing list<br>> Gate-users@lists.opengatecollaboration.org<br>> http://lists.opengatecollaboration.org/mailman/listinfo/gate-users<br>> <br>> End of Gate-users Digest, Vol 82, Issue 39<br>> ******************************************<br></div> </div></body>
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