<div class="__aliyun_email_body_block"><div style="clear:both;"><span style="font-family:Tahoma,Arial,STHeiti,SimSun;font-size:14.0px;color:#000000;">Hi, </span></div><div style="clear:both;"><font color="#000000" face="Tahoma, Arial, STHeiti, SimSun">You can evaluate your simulation by comparing the value of sensitivity, and the calculation of NEMA-IQP value to truly experimental results from the paper about your choosing PET system.</font></div><div style="clear:both;"><font color="#000000" face="Tahoma, Arial, STHeiti, SimSun"><br ></font></div><div style="clear:both;"><font color="#000000" face="Tahoma, Arial, STHeiti, SimSun">Best wishes,</font></div><div style="clear:both;"><font color="#000000" face="Tahoma, Arial, STHeiti, SimSun">Xin Zhao</font></div><div style="clear:both;"><span style="font-family:Tahoma,Arial,STHeiti,SimSun;font-size:14.0px;color:#000000;"><br /></span></div><div style="clear:both;"><div class=" __aliyun_node_has_color __aliyun_node_has_bgcolor" 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class="Apple-interchange-newline"></div></div><div style="clear:both;"><span style="font-family:Tahoma,Arial,STHeiti,SimSun;font-size:14.0px;color:#000000;"><br /></span></div><blockquote style="margin-right:0;margin-top:0;margin-bottom:0;"><div style="clear:both;"><span style="font-family:Tahoma,Arial,STHeiti,SimSun;font-size:14.0px;color:#000000;">------------------------------------------------------------------</span></div><div style="clear:both;"><span style="font-family:Tahoma,Arial,STHeiti,SimSun;font-size:14.0px;color:#000000;">发件人：Aziza Zendour <zizoaziza525@gmail.com></span></div><div style="clear:both;"><span style="font-family:Tahoma,Arial,STHeiti,SimSun;font-size:14.0px;color:#000000;">发送时间：2022年6月7日(星期二) 20:40</span></div><div style="clear:both;"><span style="font-family:Tahoma,Arial,STHeiti,SimSun;font-size:14.0px;color:#000000;">收件人：castor-users <castor-users@lists.castor-project.org></span></div><div style="clear:both;"><span style="font-family:Tahoma,Arial,STHeiti,SimSun;font-size:14.0px;color:#000000;">主 题：[Castor-users] Simulation PET Scan</span></div><div style="clear:both;"><span style="font-family:Tahoma,Arial,STHeiti,SimSun;font-size:14.0px;color:#000000;"><br /></span></div><div ><div ><br ></div><div >Hello all,</div><div >I hope you are well.</div><div >I am actually preparing my final project of the year, is about Modeling and simulation of PET Scan with GATE.</div><div >I chose "Ge STE PET/CT Scan" as a model but I still have a problem. </div><div >I don't understand how I will evaluate my simulation, what parameters should I calculate to say that my simulation is correct?</div><div ><br ></div><div ><br ></div><div ><br ></div><div >Thanks in advance.</div><div >Cordially.</div><div ><br ></div></div><br ><div class="gmail_quote"><div class="gmail_attr">Le lun. 6 juin 2022 à 04:22, 赵鑫 <<a href="mailto:zhaoxin@szbl.ac.cn" target="_blank">zhaoxin@szbl.ac.cn</a>> a écrit :<br ></div><div ><div style="clear:both;">Dear CASToR developers and users,<br ><br > We simulated a cylindrical phantom using GATE and extract time and crystalID information from ROOT file. We organized two groups of Cdh&Cdf files followed CASToR input datafile format, for non-TOF and TOF reconstruction respectively. Two recon images are shown in "non-TOF recon.png" & "141ps TOF recon.png" images as presented in the attachment. But I found out that there is almost no attenuation that can be seen in the "141ps TOF recon.png" image compared to "non-TOF recon.png". From the image profiles in "profile.png", it can be seen from the non-TOF recon image that the central area has obvious count attenuation, while the TOF recon image shows no sign of attenuation. I am curious about why because I applied no additional "-atn XXXX.hdr" attenuation correction when running castor-recon for TOF reconstruction. <br > The CASToR recon command of 141ps TOF recon is: "castor-recon -df /home/castor/BrainPET_IEC_F18_3sphere1_5p3c_TOF141p42ps.Cdh -opti MLEM -it 10:9 -proj joseph -conv gaussian,1.7,1.7,3::psf -dim 630,630,250 -vox 0.3225,0.32255,0.3225 -dout /home/castor/img/BrainPET_IEC_F18_3sphere1_37and22and13_5p3concent_510s_TOF141p42ps_20220605 -th 0". The TOF recon datafile header "BrainPET_IEC_F18_3sphere1_5p3c_TOF141p42ps.Cdh" is also submitted in the attechment.<br > Do you have any idea why attenuation seems not obvious in the TOF recon image from castor-recon? Can you point out what went wrong with my TOF Recon? Any advice and suggestion will be greatly appreciated. Thank you! <br ><br >All the best,<br >Xin Zhao<br ><br ></div><div style="clear:both;"><div class=" __aliyun_node_has_color __aliyun_node_has_bgcolor" id="m_-5928641186771015109sign_card" style="margin:.0px;padding:.0px;color:#000000;font-size:16.0px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;text-align:left;text-indent:.0px;text-transform:none;background-color:#ffffff;text-decoration-style:initial;text-decoration-color:initial;display:table;"></div></div></div>_______________________________________________<br >
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