<html><head><style>p{margin-top:0px;margin-bottom:0px;}</style></head><body><div style="font-size:10pt; font-family:Gulim, sans-serif;"><p><span style="font-size: 13.3333px;">Dear </span><span style="font-size: 13.3333px;">Thibaut</span><span style="font-size: 13.3333px;">,</span> </p><p>Thank you for your answer.</p><p> </p><p>I will explain in more detail.</p><p>So far, I have used the "-TOF_reso" option when simulating a traditional 1-layer crystal detector with a 'cylindricalPET'.</p><p> </p><p>But the situation is different now.</p><p>I tried to perform offset detector image reconstruction with 'cylindricalPET', but I found that 'cylindricalPET' offset detector could not reconstruct CASTOR images.</p><p>Therefore, 'systemType' is performing offset detector simulation using 'PETscanner'. Therefore, I have to make my own cdf and cdh files without using 'castor-GATERootToCastor'.</p><p> </p><p>Therefore, I checked 'Table 3' of CASToR_general_documentation and I am going to try image reconstruction.</p><p>But it's hard for me to understand 'Table 3'.</p><p>I don't know what data output from 'GATE Coincidence output' should be used for scatter correction, random correction and TOF image reconstruction.</p><p> </p><p>I'm sorry I couldn't tell you the details of the previous question.</p><p>If you don't have enough explanation, please ask me again.</p><p>And I would appreciate it if you could let me know if there is any other way other than "PETscanner."</p><p>Thank you. I look forward to hearing from you.</p><p> </p><p> </p><p style="font-size:10pt;font-family:sans-serif;padding:0 0 0 10pt"><span>-----Original Message-----</span><br><b>From:</b> "tmerlin"<Thibaut.Merlin@univ-brest.fr> <br><b>To:</b> <castor-users@lists.castor-project.org>; <br><b>Cc:</b> <br><b>Sent:</b> 2022-03-08 (화) 01:00:38 (GMT+09:00)<br><b>Subject:</b> Re: [Castor-users] How to apply 'time resolution (200 ps)' and 'random&scatter correction' to the offset detector<br> </p>
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<p>Dear Suhwan,</p>
<p><br>
</p>
<p>Using the GATE to CASToR tool, you can use the "<i>-TOF_reso</i>"
option in order to enable TOF and set a time resolution
corresponding to the CRT. <br>
</p>
<p>Regarding scatter and random correction, the tool just computes
scatter/random rate according to the acquisition and doesn't
perform real scatter and random corrections. If you want to
perform these corrections, you will have to compute them yourself.
Alternatively, you can choose to ignore scatter and random and
only convert the trues with the <i>-t</i> option.</p>
<p><br>
</p>
<p>Hope this helps,<br>
Thibaut<br>
</p>
<p><br>
</p>
<div>On 07/03/2022 12:47, Shwan K wrote:<br>
</div>
<blockquote type="cite" cite="mid:50885383a2bd569776b835a8807e3357@cweb014.nm.nfra.io">
<div style="font-size:10pt; font-family:Gulim, sans-serif;">
<p style="font-family: 돋움, Dotum, Helvetica, Apple SD Gothic Neo, sans-serif; font-size: 12px;">Dear CASToR
Users and Developers, </p>
<p style="font-family: 돋움, Dotum, Helvetica, Apple SD Gothic Neo, sans-serif; font-size: 12px;"> </p>
<p style="font-family: 돋움, Dotum, Helvetica, Apple SD Gothic Neo, sans-serif; font-size: 12px;"><font face="돋움, Dotum, Helvetica, Apple SD Gothic Neo, sans-serif">Hi
I am Suhwan Kim</font></p>
<p style="font-family: 돋움, Dotum, Helvetica, Apple SD Gothic Neo, sans-serif; font-size: 12px;"> </p>
<p style="font-family: 돋움, Dotum, Helvetica, Apple SD Gothic Neo, sans-serif; font-size: 12px;">I designed the
offset detector of 'PETscanner' using the GATE tool.</p>
<p style="font-family: 돋움, Dotum, Helvetica, Apple SD Gothic Neo, sans-serif; font-size: 12px;">I want to
apply 'time resolution (200 ps)' and 'random&scatter
correction' when performing image reconstruction.</p>
<p style="font-family: 돋움, Dotum, Helvetica, Apple SD Gothic Neo, sans-serif; font-size: 12px;">I don't know
how to proceed.</p>
<p style="font-family: 돋움, Dotum, Helvetica, Apple SD Gothic Neo, sans-serif; font-size: 12px;">can you help
me??</p>
<p style="font-family: 돋움, Dotum, Helvetica, Apple SD Gothic Neo, sans-serif; font-size: 12px;"> </p>
<p style="font-family: 돋움, Dotum, Helvetica, Apple SD Gothic Neo, sans-serif; font-size: 12px;">Thanks</p>
<p style="font-family: 돋움, Dotum, Helvetica, Apple SD Gothic Neo, sans-serif; font-size: 12px;"> </p>
<p style="font-family: 돋움, Dotum, Helvetica, Apple SD Gothic Neo, sans-serif; font-size: 12px;">Suhwan Kim</p>
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<pre cols="72">--
Thibaut MERLIN -- PhD
Docteur en Imagerie Médicale au Laboratoire de Traitement de l'Information Medicale (LaTIM - INSERM UMR 1101)
Institut Brestois de recherche en Bio-Santé (IBRBS)
12 Avenue Foch, 29200 Brest, FRANCE
Tel: 06.75.12.24.90</pre>
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