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<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"><span style="mso-fareast-language:EN-US">Hi<o:p></o:p></span></a></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="mso-fareast-language:EN-US">STIR questions ideally should go to the STIR mailing list. You might have more luck there.<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="mso-fareast-language:EN-US">Sadly, in your case, the answer is that STIR cannot currently do this (which is why it isn’t described in the Users Guide!) as it’s limited to cylindrical
scanners. <o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="mso-fareast-language:EN-US">There’s related work by Yannis Fischer in STIR to create a “virtual” cylindrical scanner and position detected LORs on that scanner. This uses their SAFIR
file format, not ROOT, but it would serve as a basis for extending this idea to GATE if you wanted to. Also, Parisa Khateri is currently working on modifying STIR to be able to do block geometries, you can see her emails on the stir-devel mailing list. This
is work in progress though and I don’t think ROOT support is already available.<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="mso-fareast-language:EN-US">Potentially you could help with all these efforts of course.<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="mso-fareast-language:EN-US">By the way, Elise Emond will give a talk at the STIR meeting at the IEEE MIC in 2 weeks which includes how to make the connection between GATE/ROOT and
STIR (while currently still ignoring the block geometry). <o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="mso-fareast-language:EN-US">Sorry to disappoint.<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="color:black">Kris Thielemans<br>
Reader in Medical Imaging Physics<br>
Institute of Nuclear Medicine<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="color:black">University College London<br>
<br>
<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></span></p>
<span style="mso-bookmark:_MailEndCompose"></span>
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Gate-users [mailto:gate-users-bounces@lists.opengatecollaboration.org]
<b>On Behalf Of </b>???<br>
<b>Sent:</b> 12 October 2017 10:38<br>
<b>To:</b> gate-users@lists.opengatecollaboration.org<br>
<b>Subject:</b> [Gate-users] Change the scanner geometry in STIR<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p>Hi dear GATE users. <o:p></o:p></p>
<p>I want to change the scanner geometry in PET reconstruction using STIR in order to fit my scanner's geometry in GATE. But I don't know how to. For example, I want a Hexagon detector in STIR's scanner.s file instead of an annular scanner. But I can't find
the instruction from the text and the userguide. Can STIR accepts that users defined the shape of their scanner?
<o:p></o:p></p>
<p><o:p> </o:p></p>
<p><span style="font-family:"Tahoma",sans-serif;color:#333333">Best regards</span>
<o:p></o:p></p>
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