<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<p>Dear Yeongkyeong,</p>
<p>Regarding attenuation correction, you should provide an
attenuation image (interfile format) of the jaszczak phantom in
cm-1 unit to the <i>castor-recon</i> executable (assuming your
GATE data has been converted to list-mode, which is selected by
default for data converted from GATE). Note that the conversion
utility (<i>castor-GATERootToCastor</i>) also contains an <i>-atn</i>
option, which is only to use if you want an histogram dataset. <br>
</p>
<p>There is currently no tools to automatically compute
normalization correction factors. You could generate a
normalization datafile (see <a moz-do-not-send="true"
href="http://www.castor-project.org/sites/default/files/2018-11/CASToR_general_documentation.pdf">the
documentation</a>, section 6.1.2) for your GATE data using this
kind of method: <a moz-do-not-send="true"
href="https://ieeexplore.ieee.org/document/6153804">https://ieeexplore.ieee.org/document/6153804</a>.
Alternatively, you could directly generate a sensitivity image
containing normalization corrections using a GATE simulation of an
uniform object spanning the whole field of view of your system.
Then, you provide this image to <i>castor-recon</i> using <i>-sens</i><i>
path/to/your_sensitivity_image.hdr</i> to bypass the sensitivity
image generation step and use your image instead). However, this
approach should be less accurate.<br>
</p>
<p>Finally the error you get means the code can't find the scanner
repository, which is apparently located at <i>/GATE/castor_v.2.0.2/</i><i>castor_v2.0.2/config/scanner
</i>in your system. You should check if the path is correct (no
typo?).<br>
<i></i></p>
<p>Hope this helps!</p>
<p>Best regards,</p>
<p>Thibaut</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 28/01/2019 11:18, 김연경 wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CA+f9Ky-UpajkA7x121A30NK9_71DJbM063+AHMaaPx-KA9ahNw@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">
<div dir="ltr">
<div>Dear CASToR users,</div>
<div><br class="gmail-Apple-interchange-newline">
</div>
<div>I obtained the image of the gate simulation data using
the castor program.</div>
<div><br>
</div>
<div>What data should I use to make attenuation and
normalization correction for the image?</div>
<div><br>
</div>
<div>I want to use the -atn command. Can you explain the
example sentence?</div>
<div><br>
</div>
<div>The current data is obtained by using jaszczak phantom.
Do you need additional uniform phantom data for image
correction?</div>
<div><br>
</div>
<div>And I keep getting the error below. Could you tell me the
cause and how to fix it?</div>
<div>
<div><img src="cid:part3.C3C1B885.2EC1B2D2@univ-brest.fr"
alt="image.png" class="" width="954" height="98"><br>
</div>
</div>
<div><br>
</div>
<div>
<div>How can we solve it?<br>
</div>
<div>Any help I would really appreciate it.</div>
<div><br>
</div>
<div>Best regards,</div>
<div><br>
</div>
<div>Yeongkyeong KIM</div>
</div>
<div><br>
</div>
-- <br>
<div dir="ltr" class="gmail_signature">
<div dir="ltr">
<p><font face="tahoma, sans-serif" color="#666666">YEONKYEONG
KIM</font></p>
<p><font face="tahoma,sans-serif" color="#666666">Molecular
Imaging Research&Education Laboratory (MIRE Lab)<br>
Department of Electronic Engineering,Sogang University</font></p>
<p><font face="tahoma,sans-serif" color="#666666">1105,
Teilhard Hall(TE 1105), Sogang University<br>
35 Baekbeom-ro, Mapo-gu, Seoul, South Korea 121-742<br>
Tel : +82-2-713-2652<br>
Mobile : +82-10-9996-3644<br>
Email : <a href="mailto:dusrud026@gmail.com"
style="color:rgb(17,85,204)" target="_blank"
moz-do-not-send="true">dusrud026@gmail.com</a></font></p>
</div>
</div>
</div>
</div>
</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)
Bâtiment 1
CHRU Morvan - 2, Av. Foch
29609 Brest CEDEX - FRANCE
Tel: 06.75.12.24.90</pre>
</body>
</html>