<div dir="ltr">Hi Tmerlin,<div><br></div><div>I am also curious about how to generate the attenuation map for reconstruction of GATE simulation results. Regarding your mention about image generation, 'you should generate it from the geometry of the phantom you use in the GATE simulation, or derive it directly from the phantom image if you used a voxelized phantom', could you give a detailed guide or recommendation for that? Like how do we derive it directly from the voxelized phantom or geometry of the normal phantom in GATE? Thanks!</div><div><br></div><div>Best,</div><div>Xinjie</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jun 29, 2020 at 11:00 AM tmerlin <<a href="mailto:Thibaut.Merlin@univ-brest.fr">Thibaut.Merlin@univ-brest.fr</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>Hi Suguru,</p>
<p>Attenuation image must be in interfile format, and must be in
cm-1. The dimensions/voxel sizes will be interpolated to the
reconstruction image dimensions, so you don't need to provide an
image with the exact same dimensions than for the reconstruction.
Additionally, you should make sure that the reconstruction image
dimensions are large enough to include all attenuated materials of
the attenuation image, otherwise the attenuation correction will
be incorrect. </p>
<p>Regarding the image itself, you should generate it from the
geometry of the phantom you use in the GATE simulation, or derive
it directly from the phantom image if you used a voxelized
phantom.</p>
<p>Hope this helps,</p>
<p>Thibaut<br>
</p>
<p><br>
</p>
<div>On 29/06/2020 09:57, Suguru Katsube
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hi all,
<div><br>
</div>
<div>I am trying to reconstruct a GATE root file (PET).<br>
I want to apply attenuation correction and reconstruct it. The
manual states I need an attenuation image, how do I create it
? The phantom was designed on a GATE and no CT images were
acquired. There are many unclear points such as image format,
number of pixels, number of slices, alignment, etc. Can I
create the attenuation image using a root file or mac file?</div>
<div><br>
Any advice is appreciated.<br clear="all">
<div><br>
</div>
<div>Best regards, </div>
<div><br>
</div>
-- <br>
<div dir="ltr">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div><font face="arial, sans-serif">○●----------------------------------------------------------●○</font></div>
<div><font face="arial, sans-serif"> 勝部 俊（Suguru
Katsube）</font></div>
<div>
<p style="margin:0px;line-height:normal"><font face="arial, sans-serif"><font color="#000000"> 九州大学大学院</font><span style="color:rgb(0,0,0)">医学系学府保健学専攻</span></font></p>
<p style="margin:0px;line-height:normal"><font face="arial, sans-serif" color="#000000"> 医用量子線科学分野 修士課程2年</font></p>
<p style="margin:0px;line-height:normal;min-height:14px"><font face="arial, sans-serif" color="#000000"><br>
</font></p>
<p style="margin:0px;line-height:normal"><font face="arial, sans-serif" color="#000000"> Medical
Quantum Radiation Science Course<span style="line-height:normal">,</span></font></p>
<p style="margin:0px;line-height:normal"><font face="arial, sans-serif" color="#000000"> Department
of Health Sciences<span style="line-height:normal">,</span></font></p>
<p style="margin:0px;line-height:normal"><font face="arial, sans-serif" color="#000000"> Graduate
School of Medical Sciences<span style="line-height:normal">,</span> </font></p>
<p style="margin:0px;line-height:normal"><font face="arial, sans-serif" color="#000000"> Kyushu
University<span style="line-height:normal">,</span> Fukuoka<span style="line-height:normal">,</span> Japan</font></p>
<p style="margin:0px;line-height:normal"><font face="arial, sans-serif"><font color="#000000"> E-mail: </font><a href="mailto:E-mail%3Aymmk88kmmy@gmail.com" style="color:rgb(17,85,204)" target="_blank">sug.katsu@gmail.com</a></font></p>
</div>
<div><font face="arial, sans-serif">○●----------------------------------------------------------●○</font></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
<fieldset></fieldset>
<pre>_______________________________________________
Castor-users mailing list
<a href="mailto:Castor-users@lists.castor-project.org" target="_blank">Castor-users@lists.castor-project.org</a>
<a href="http://lists.castor-project.org/listinfo/castor-users" target="_blank">http://lists.castor-project.org/listinfo/castor-users</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>
_______________________________________________<br>
Castor-users mailing list<br>
<a href="mailto:Castor-users@lists.castor-project.org" target="_blank">Castor-users@lists.castor-project.org</a><br>
<a href="http://lists.castor-project.org/listinfo/castor-users" rel="noreferrer" target="_blank">http://lists.castor-project.org/listinfo/castor-users</a><br>
</blockquote></div>