<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p>Dear Suhwan,</p>
<p><br>
</p>
<p>Regarding TOF, the difference in arrival time of the two singles
is computed from the time1/time2 variables of the GATE Coincidence
root output file. The maximum range of TOF measurements can be
approximated by the coincidence window.</p>
<p><br>
</p>
<p>Regarding scatter and random corrections, I suggest you have a
look at this previous discussion on the matter:</p>
<p><a class="moz-txt-link-freetext" href="https://lists.castor-project.org/pipermail/castor-users/2020-September/000433.html">https://lists.castor-project.org/pipermail/castor-users/2020-September/000433.html</a></p>
<p><br>
</p>
<p>About TOF scatter estimation:</p>
<p><a class="moz-txt-link-freetext" href="https://lists.castor-project.org/pipermail/castor-users/2019-November/000281.html">https://lists.castor-project.org/pipermail/castor-users/2019-November/000281.html</a></p>
<p><br>
</p>
<p>I would advise to discard scatter/random correction in a first
step and only consider the reconstruction of true coincidence
data. When you get this right, then focus on including scatter and
random corrections.<br>
</p>
<p><br>
</p>
<p>Best regards,<br>
Thibaut<br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 08/03/2022 14:49, Shwan K wrote:<br>
</div>
<blockquote type="cite"
cite="mid:194e65a654754466bfd55f38f25e7b44@cweb005.nm.nfra.io">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<style>p{margin-top:0px;margin-bottom:0px;}</style>
<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"<a class="moz-txt-link-rfc2396E" href="mailto:Thibaut.Merlin@univ-brest.fr"><Thibaut.Merlin@univ-brest.fr></a> <br>
<b>To:</b> <a class="moz-txt-link-rfc2396E" href="mailto:castor-users@lists.castor-project.org"><castor-users@lists.castor-project.org></a>; <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>
<!-- -->
<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>
</div>
<table style="display:none">
<tbody>
<tr>
<td><img
src="https://mail.naver.com/readReceipt/notify/?img=Cwn9FAicbrn9hAn%2FFqudKA2%2FFxK%2FKruZM4t9FovXFqpSaAK9Mx2%2FKA%2B0KqK9FdIo%2BrkSKAud74lR74l4b4u516YQarFCbX3TbS99brkZbdIn1BFdbZloMBFdWXURbHiT14ko%2BVlTb4b%3D.gif"
moz-do-not-send="true" border="0"></td>
</tr>
</tbody>
</table>
<br>
<fieldset></fieldset>
<pre wrap="">_______________________________________________
Castor-users mailing list
<a href="mailto:Castor-users@lists.castor-project.org" rel="noreferrer noopener" target="_blank" moz-do-not-send="true">Castor-users@lists.castor-project.org</a>
<a href="https://lists.castor-project.org/mailman/listinfo/castor-users" rel="noreferrer noopener" target="_blank" moz-do-not-send="true">https://lists.castor-project.org/mailman/listinfo/castor-users</a>
To look for something in the mailing-list archives, use the search box at:
<a href="https://castor-project.org/mailing-list" rel="noreferrer noopener" target="_blank" moz-do-not-send="true">https://castor-project.org/mailing-list</a></pre>
</blockquote>
<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>
</div>
<table style="display:none">
<tbody>
<tr>
<td><img
src="https://mail.naver.com/readReceipt/notify/?img=C%2Fb9FAicbrnwhAn%2FFqudax30FokCFoEdFqEdFAMrM4pvFxk4KqC4Kok0FrUdFuIo%2BrkSKAg974lR74l4b4u516YQa93c16iC%2BBt5x6kZWz05tHk51BMRMNi0bXt5pNU%3D.gif"
moz-do-not-send="true" border="0"></td>
</tr>
</tbody>
</table>
</blockquote>
<pre class="moz-signature" 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>
</body>
</html>