<div>Thank you Simon for so quick answer, I will have a try.</div><div><br></div><div>Xin Zhao</div><div><includetail><div> </div><div> </div><div style="font:Verdana normal 14px;color:#000;"><div style="FONT-SIZE: 12px;FONT-FAMILY: Arial Narrow;padding:2px 0 2px 0;">------------------ Original ------------------</div><div style="FONT-SIZE: 12px;background:#efefef;padding:8px;"><div id="menu_sender"><b>From: </b> "simon.stute"<simon.stute@chu-nantes.fr>;</div><div><b>Date: </b> Wed, Jun 1, 2022 06:10 PM</div><div><b>To: </b> "castor-users"<castor-users@lists.castor-project.org>; "zhaoxin"<zhaoxin@szbl.ac.cn>; <wbr></div><div></div><div><b>Subject: </b> Re: [Castor-users] how to write attenuation image header file</div></div><div> </div><div style="position:relative;"><div id="tmpcontent_res"></div>
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<p>Hi,</p>
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<p>The header is the same as for images coming out from CASToR. You can use one of these as a template.</p>
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<p>Simon</p>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>De :</b> Castor-users <castor-users-bounces@lists.castor-project.org> de la part de 赵鑫 <zhaoxin@szbl.ac.cn><br>
<b>Envoyé :</b> mercredi 1 juin 2022 11:48<br>
<b>À :</b> castor-users<br>
<b>Objet :</b> [Castor-users] how to write attenuation image header file</font>
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Dear CASToR developers and users,</p>
<p class="MsoNormal" style="margin:.0px; text-align:justify; font-size:14.0px; font-family:等线">
I have been facing an issue with attenuation when trying to reconstruct a PET image from GATE simulation data, and my simulation item is a 200mm-diameter water cylinder. As shown in the attachment: "clinder.png", obvious attenuations can be seen in the recon
image, so I need to apply attenuation correction by providing the MuMap file with the help of "-atn XXX" in castor-recon.</p>
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I have already obtained MuMap file ("BrainPET_atn_Water-MuMap.raw" in attachment) and its header ("BrainPET_atn_Water-MuMap.mhd") from MuMapActor in GATE. submitted the header file into castor-recon using the following commands: "castor-recon -df /home/castor/workDir/Cdf/Clinder_b2b_WaterPhantom.Cdh
-atn /home/castor/workDir/atn/BrainPET_atn_Water-MuMap.mhd -opti MLEM -it 10:9 -proj joseph -conv gaussian,1.7,1.7,3::psf -dim 630,630,40 -vox 0.3225,0.32255,0.3225 -dout /home/castor/workDir/img/waterClinder_forAttenuation -th 0"</p>
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But errors were shown on screen, as provided in the attachment: "output.png". I guess it is because I did not offer the image header file in the correct format as CASToR required. Can anyone tell me where can I find an example of attenuation image header
file, so I can write the MuMap header correctly.</p>
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Best regards</p>
<p class="MsoNormal" style="margin:.0px; font-size:14.0px; font-family:等线; text-align:left">
Xin Zhao</p>
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<span title="BrainPET_atn_Water-MuMap.raw(60.6MB)" style="vertical-align:middle">BrainPET_atn_Water-MuMap.raw<span style="color:#888; padding-left:15px">[60.6MB]</span></span>
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