<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;">
Hi,
<div><br>
</div>
<div>In response to your first question: this is a bug in the current release version of Gate. This has been reported on the mailing list here: <a href="http://comments.gmane.org/gmane.comp.science.opengate.user/3299">http://comments.gmane.org/gmane.comp.science.opengate.user/3299</a></div>
<div><br>
</div>
<div>Follow the instructions in the message above, then recompile Gate to fix this.</div>
<div><br>
</div>
<div>Hope this helps!<br>
<div apple-content-edited="true"><span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px;">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">
<div>Marc</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>__________________________</div>
<div><br>
</div>
<div>Marc Chamberland, MSc</div>
PhD candidate<br>
Department of Physics<br>
Carleton University<br>
Ottawa (ON)</div>
</span></div>
<br>
<div>
<div>On Feb 11, 2014, at 16:01, Li, Ke <<a href="mailto:ke@wustl.edu">ke@wustl.edu</a>> wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">
<div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
<div style="font-size: 12pt; background-color: rgb(255, 255, 255); font-family: Calibri, Arial, Helvetica, sans-serif;">
<div style="margin-top: 0px; margin-bottom: 0px;">Dear GATE users,</div>
<div style="margin-top: 0px; margin-bottom: 0px;"><br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;">I'm trying to run some simulation of a PET scanner that has two different kinds of crystal and corresponding electronics. Using the multi-system feature in GATE v6.2 I could define two-system PET scanner. Following
is my setup:<br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;"><br>
</div>
<div>#<span class="Apple-tab-span" style="white-space: pre;"> </span>First Scanner (cylindricalPET)<br>
</div>
<div>/gate/world/daughters/name Scanner_1<br>
</div>
<div>/gate/world/daughters/systemType cylindricalPET</div>
<div>........................<br>
</div>
<div style="font-family: calibri, arial, helvetica, sans-serif; font-size: 16px;">
#<span class="Apple-tab-span" style="white-space: pre;"> </span>Second Scanner (cylindricalPET)<br>
</div>
<div style="font-family: calibri, arial, helvetica, sans-serif; font-size: 16px;">
/gate/world/daughters/name Scanner_2<br>
</div>
<div style="font-family: calibri, arial, helvetica, sans-serif; font-size: 16px;">
/gate/world/daughters/systemType cylindricalPET</div>
<div style="margin-top: 0px; margin-bottom: 0px;">.........................<br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;"><br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;"><br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;">The system, and its modules are successfully attached.<br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;">Then for the Digitizer part, I have 2 digitizer:<br>
</div>
<div><br>
</div>
<div><br>
</div>
<div># For Scanner_1, using default singles chain "Singles"<br>
</div>
<div>/gate/digitizer/Singles/insert systemFilter<br>
</div>
<div>/gate/digitizer/Singles/systemFilter/selectSystem Scanner_1<br>
</div>
<div>....................<br>
</div>
<div># For Scanner_2, adding another singles chain "Singles_2"<br>
<div>/gate/digitizer/name Singles_2<br>
</div>
<div>/gate/digitizer/insert singleChain<br>
</div>
<div>/gate/digitizer/Singles_2/insert systemFilter<br>
</div>
<div>/gate/digitizer/Singles_2/systemFilter/selectSystem Scanner_2<br>
</div>
<div>..................<br>
</div>
<br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;"><br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;">Then these two singles chain go to 2 coincidence sorter:<br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;"><br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;"><br>
</div>
<p style="margin-top: 0px; margin-bottom: 0px;"></p>
<div># Using default "Coincidences" for default single chain "Singles"<br>
</div>
<div>/gate/digitizer/Coincidences/setInputName Singles<br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;">..................<br>
</div>
<div># Adding another coincidence sorter "<span style="font-family: calibri, arial, helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">Coincidences_2</span>" using singles input "<span style="font-family: calibri, arial, helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">Singles_2</span>"<br>
</div>
<div>/gate/digitizer/name Coincidences_2<br>
</div>
<div>/gate/digitizer/insert coincidenceSorter <br>
</div>
<div>/gate/digitizer/Coincidences_2/setInputName Singles_2<br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;"><br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;">After simulation(ASCII output), I got 2 singles file and 2 coincidence file. Here comes my problems:<br>
</div>
<div>
<div style="margin-top: 0px; margin-bottom: 0px;"><br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;">Question 1.<br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;">According to the user guide, Data output part, <a href="http://wiki.opengatecollaboration.org/index.php/Users_Guide_V6.2:Data_output">http://wiki.opengatecollaboration.org/index.php/Users_Guide_V6.2:Data_output</a><br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;">In the singles.dat file, column 7-12 should be the ID of the volumes of detection, in which column 7 is "ID of volume attached to the "base" level of the system". In this multi-system PET, I expect to see this
value be different(say 0 and 1) in the two singles.dat file (corresponding to Scanner_1 and Scanner_2). But actually in both files, this value is 0, which means I could not tell from an entry that which system this single comes from. Is this normal? If so,
what does "the <span style="font-family: calibri, arial, helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">"</span><span style="font-family: calibri, arial, helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">base"
level of the system</span><span style="font-family: calibri, arial, helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">" mean?</span><br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;"><span style="font-family: calibri, arial, helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);"><br>
</span></div>
<div style="margin-top: 0px; margin-bottom: 0px;"><span style="font-family: calibri, arial, helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">Question 2.</span></div>
<div style="margin-top: 0px; margin-bottom: 0px;">In GATE 6.2, is there any ways to find the coincidence across different systems? For example, I would like to have coincidence between Scanner_1 and Sanner_2, or let the coincidence processor not only find coincidence
within single chain "Singles" and "Singles_2" but also coincidences that has one event in "Singles" and the other event in "Singles_2"<br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;">I noticed there is a chapter on using the TriCoincidence processor to find coincidence between a coincidence pulse and a singles list. But this is not what I want. This is finding coincidence between a coincidence
pulse and a singles list. I need to find coincidence between two singles list.<br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;"><br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;">Thanks.<br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;"><br>
</div>
<div style="margin-top: 0px; margin-bottom: 0px;"><br>
</div>
<div style="font-family: tahoma; font-size: 13px;">Ke Li
<div>PhD student</div>
<div>Department of Electrical and System Engineering</div>
<div>Washington University in St. Louis</div>
</div>
</div>
</div>
_______________________________________________<br>
Gate-users mailing list<br>
<a href="mailto:Gate-users@lists.opengatecollaboration.org">Gate-users@lists.opengatecollaboration.org</a><br>
<a href="http://lists.opengatecollaboration.org/mailman/listinfo/gate-users">http://lists.opengatecollaboration.org/mailman/listinfo/gate-users</a></div>
</blockquote>
</div>
<br>
</div>
</body>
</html>