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<p>Dear Zhengzhi,</p>
<p>Please let me call your attention to a series of papers our group
has published regarding the intrinsic radioactivity in LYSO
crystals due to Lu-176:</p>
<p>- Alva-Sánchez H, et al., “Understanding the intrinsic
radioactivity energy spectrum from 176Lu in LYSO/LSO scintillation
crystals”, Nature Sci. Rep. (2018) 8:17310
(<a class="moz-txt-link-freetext" href="https://doi.org/10.1038/s41598-018-35684-x">https://doi.org/10.1038/s41598-018-35684-x</a>)<br>
</p>
- Enríquez-Mier-y-Terán FE, et al., “GATE simulation of the
intrinsic radioactivity in LYSO scintillation crystals”, Nucl.
Instr. Meth. B 454 (2019) 1-5.
(<a class="moz-txt-link-freetext" href="https://doi.org/10.1016/j.nimb.2019.06.001">https://doi.org/10.1016/j.nimb.2019.06.001</a>).<br>
<p>- Enríquez-Mier-y-Terán FE, et al., “Coincidence energy spectra
due to the intrinsic radioactivity of LYSO scintillation
crystals”, EJNMMI Physics (2020) 7:21
(<a class="moz-txt-link-freetext" href="https://doi.org/10.1186/s40658-020-00291-1">https://doi.org/10.1186/s40658-020-00291-1</a>).<br>
</p>
<p>For the second and third ones we actually used the ion source for
Lu-176 in GATE v8.1, and it worked just fine. I hope you find this
information useful.</p>
<p>Best regards,<br>
Arnulfo<br>
</p>
<pre class="moz-signature" cols="72">Arnulfo Martinez-Davalos, PhD
Instituto de Fisica, UNAM
A.P. 20-364
01000 CDMX
MEXICO</pre>
<div class="moz-cite-prefix">On 2020-06-11 12:09 AM, Albert Grace
Lieu wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAGLxnT-Qdh-NZ8KoBOQuH=zszHP+zw5f_aeD5ADLNDP9zYzG6Q@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">Dear Gate users and developers,
<div><br>
</div>
<div>There are a couple of papers [<a
href="https://aapm.onlinelibrary.wiley.com/doi/abs/10.1118/1.4824694"
moz-do-not-send="true">1</a>,<a
href="https://ieeexplore.ieee.org/document/5751205"
moz-do-not-send="true">2</a>] addressing the importance of
adding the simulation of Lu-176 in Lutetium based crystal in
GATE simulation. I try to do this to my simulated PET system
that has thousands of pieces of crystals (created with linear
and cubic array repeater). My general idea of implementing
this is to create a Lu176 ion source and then attach it to my
crystals. However, when I do:</div>
<div><br>
</div>
<div>/gate/source/Lu176/attachTo Crystal </div>
<div><br>
</div>
<div>the Lu176 is only attached to a single piece of crystal
(which can be visualized with /gate/source/Lu176/visualize
1000 red 3). Has anyone implemented this before? Could you
please share your thoughts?</div>
<div><br>
</div>
<div>Thanks a lot. Greatly appreciated. </div>
<div><br>
</div>
<div>Zhengzhi </div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
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