<div dir="ltr"><br><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">---------- Forwarded message ---------<br>From: <b class="gmail_sendername" dir="auto">Thielemans, Kris</b> <span dir="auto"><<a href="mailto:k.thielemans@ucl.ac.uk">k.thielemans@ucl.ac.uk</a>></span><br>Date: Thu, Jun 26, 2025 at 5:31 PM<br>Subject: 2nd PET Rapid Image reconstruction Challenge (PETRIC2): first announcement</div><br><div class="msg6076107683568030681">





<div lang="EN-GB" link="#467886" vlink="#96607D" style="word-wrap:break-word">
<div class="m_6076107683568030681WordSection1">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Dear all<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">We are happy to announce that PETRIC 2 will start in November 2025!
<br>
<br>
>From 1 November 2025 to 1 March 2026, we will be running our second PET Rapid Image reconstruction Challenge.
<br>
<br>
What's this about? <u></u><u></u></span></p>
<ul type="disc">
<li class="MsoNormal">
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Develop a PET reconstruction algorithm to solve a maximum a-posteriori estimate (MAP) using the smoothed relative difference prior (RDP)
<u></u><u></u></span></li><li class="MsoNormal">
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Phantom data with low count levels from different scanners are available for development
<u></u><u></u></span></li><li class="MsoNormal">
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">An example repository on GitHub with an implementation of a reference algorithm will be provided
<u></u><u></u></span></li><li class="MsoNormal">
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Make sure your algorithm is the fastest to reach our target image quality
<u></u><u></u></span></li><li class="MsoNormal">
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Win cash prizes<u></u><u></u></span></li></ul>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Some more details are at
<a href="https://github.com/SyneRBI/PETRIC2" target="_blank">https://github.com/SyneRBI/PETRIC2</a> (more to follow soon).<br>
<br>
You have not heard about PETRIC before? Have a look here:</span><span class="m_6076107683568030681MsoHyperlink"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">
<a href="https://www.ccpsynerbi.ac.uk/petric/" target="_blank">https://www.ccpsynerbi.ac.uk/petric/</a>
</span></span><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> where you can find links to the software, results, awards and the associated workshop, including recordings.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">PETRIC2 participants will be encouraged to our
<b>special issue</b> on <a href="https://www.frontiersin.org/research-topics/68511/rapid-image-reconstruction" target="_blank">
Rapid Image Reconstruction</a> in Frontiers in Nuclear Medicine. This special issue is
<b>open for everyone until June 2026</b>,<b> </b>and is not restricted to PET. Please note that we have vouchers available for Open Access fees for submission before September 2025.<br>
<br>
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Feel free to forward this message.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">We gratefully acknowledge funding from UKRI EPSRC and DRI as well as
<a href="https://www.cosec.ac.uk/" target="_blank">CoSeC</a> technical support to be able to run this challenge.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">On behalf of the PETRIC2 organisers:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Charalampos Tsoumpas (RU Groningen), Christoph Kolbitsch (PTB), Matthias Ehrhardt (U Bath), Kris Thielemans (UCL)<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">and
<a href="https://www.ccpsynerbi.ac.uk/" target="_blank">CCP SyneRBI</a>.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Kris Thielemans<br>
Professor in Medical Imaging Physics at University College London,<br>
Institute of Nuclear Medicine,<br>
UCL Hospital Tower 5, 235 Euston Road, London NW1 2BU,  UK<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><u></u> <u></u></span></p>
</div>
</div>

<br>
<hr>
<p align="center">To unsubscribe from the CCP-SYNERBI-STEERING-PANEL list, click the following link:<br>
<a href="https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP-SYNERBI-STEERING-PANEL&A=1" target="_blank">https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP-SYNERBI-STEERING-PANEL&A=1</a>
</p>
</div></div></div>