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Hi Yeongkyeong,<br><br>
There is no additional commands to use besides <em>-TOF_reso</em>, which will provide the assumed time resolution of the system. The TOF measurements <em>dt</em> for each event is computed from the time1 and time2 ROOT variables, and the time measurement range (written in the datafile header) is recovered during the conversion process. You could check if the <em>dt</em> measurements in your datafile seems consistent using the castor-datafileExplorer executable with the following options to explore the datafile event by event : <em>-df /path/to/datafile/header -i -e</em><br>
Depending on the ToF resolution, the convergence with ToF correction could be much faster than with non ToF. At some point, increasing the number of iterations would just increase the noise level, so it could be worth to check the image you get just after a few iterations (e.g 3, 4 iterations, without subsets).<br><br>
Hope this helps !<br><br>
Kind regards,<br>
Thibaut<br><br><br>
김연경 <<a href="mailto:dusrud026@gmail.com">dusrud026@gmail.com</a>> a écrit :</p>
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Dear CASToR users,</div>
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I try to reconstruct the TOF image by converting the root result obtained by the GATE simulation into a castor file.</div>
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I have added the TOF_reso command and converted the data. Do I need any other commands besides this command?</div>
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The command I wrote is below.</div>
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castor-GATERootToCastor -i my_data.root -m my_data.mac -o my_TOF_image -s my_data -TOF_reso 220. -src</div>
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In the above command, TOF image and nonTOF image were reconstructed using TOF_reso command. However, image results were nonTOF image better than TOF image.</div>
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The commands used to create the two images are shown below.</div>
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castor-recon -vb 2 -df 181221_nonTOF_t15_60s_jaszczak_src_df.Cdh -fout 181221_nonTOF_t15_60_jaszczak_src -it 5:5 -dim 400,400,400 -opti MLEM -proj joseph -conv gaussian,3.,3.,3.::psf</div>
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<img alt="image.png" height="296" src="cid:qIY7a746P7kfHZVpr-M9Vg7@webmailperso.univ-brest.fr" width="542"></div>
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How can we solve it?</div>
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Any help I would really appreciate it.</div>
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Best regards,</div>
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Yeongkyeong KIM</div>
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<font color="#666666" face="tahoma, sans-serif">YEONKYEONG KIM</font></p>
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<font color="#666666" face="tahoma,sans-serif">Molecular Imaging Research&Education Laboratory (MIRE Lab)<br>
Department of Electronic Engineering,Sogang University</font></p>
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<font color="#666666" face="tahoma,sans-serif">Email : <a href="mailto:dusrud026@gmail.com" style="color:rgb(17,85,204)" target="_blank">dusrud026@gmail.com</a></font></p>
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