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<p style="margin-top:0;margin-bottom:0">Hi,</p>
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<p style="margin-top:0;margin-bottom:0">I have had problems with scatter recording not behaving properly when atomic deexcitation is enabled as a physics process.
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<p style="margin-top:0;margin-bottom:0">Emlyn Price<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Gate-users <gate-users-bounces@lists.opengatecollaboration.org> on behalf of Uwe.Pietrzyk <Uwe.Pietrzyk@web.de><br>
<b>Sent:</b> 09 November 2018 17:18:09<br>
<b>To:</b> Allison Craig<br>
<b>Cc:</b> gate-users@lists.opengatecollaboration.org<br>
<b>Subject:</b> Re: [Gate-users] Missing scatter in sensitive detector?</font>
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<div class="">Hello Alison Craig,</div>
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<div class="">I would like to suggest having a look at the Benchmark</div>
<div class="">Gamma-Camera, especially the analysis file “.C” which</div>
<div class="">reads the ROOT-File and provides some statistics about</div>
<div class="">the different types of scatter. See also attached file, I found</div>
<div class="">on my system.</div>
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<div class="">All the best and kind regards,</div>
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<div class="">Uwe Pietrzyk</div>
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Prof. Dr. Uwe Pietrzyk<br class="">
Diplom-Physiker<br class="">
Am Anger 18<br class="">
50374 Erftstadt<br class="">
Tel: +49-2235-922038<br class="">
Fax: +49-2235-922039<br class="">
Mobil: +49-172-213-2155<br class="">
eMail: <a href="mailto:Uwe.Pietrzyk@web.de" class="">Uwe.Pietrzyk@web.de</a></div>
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<div class="">On 9. Nov 2018, at 16:02, Allison Craig <<a href="mailto:Allison.Craig@icr.ac.uk" class="">Allison.Craig@icr.ac.uk</a>> wrote:</div>
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Hi all</div>
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I have a model of a SPECT system, I have run an acquisition with a Tc99m line source within a cylindrical phantom and am trying to isolate the scattered from the non-scattered photons from within the root file.</div>
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<div class="" style="margin:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
I have removed all Compton and Rayleigh scatter within the phantomSD and crystal and yet my spectrum is still showing some scattered photons:</div>
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<span class=""><span id="x_x_cid:image001.jpg@01D4783D.4CEF5B00"><image001.jpg></span></span></div>
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I have set my sensitive detectors as:</div>
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<div class="" style="margin:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span class="" style="font-size:10pt; font-family:'Lucida Console'">/gate/Phantom/attachPhantomSD</span></div>
<div class="" style="margin:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span class="" style="font-size:10pt; font-family:'Lucida Console'">/gate/compartment/attachPhantomSD</span></div>
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<span class="" style="font-size:10pt; font-family:'Lucida Console'">/gate/shielding/attachPhantomSD</span></div>
<div class="" style="margin:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span class="" style="font-size:10pt; font-family:'Lucida Console'">/gate/SPECThead/attachPhantomSD</span></div>
<div class="" style="margin:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span class="" style="font-size:10pt; font-family:'Lucida Console'">/gate/collimator/attachPhantomSD</span></div>
<div class="" style="margin:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span class="" style="font-size:10pt; font-family:'Lucida Console'">/gate/casing/attachPhantomSD</span></div>
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<span class="" style="font-size:10pt; font-family:'Lucida Console'"> </span></div>
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<span class="" style="font-size:10pt; font-family:'Lucida Console'">And my root output as:</span></div>
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<div class="" style="margin:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span class="" style="font-size:10pt; font-family:'Lucida Console'">/gate/output/root/enable</span></div>
<div class="" style="margin:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span class="" style="font-size:10pt; font-family:'Lucida Console'">/gate/output/root/setFileName Test1</span></div>
<div class="" style="margin:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span class="" style="font-size:10pt; font-family:'Lucida Console'">/gate/output/root/setRootSinglesAdderFlag 1</span></div>
<div class="" style="margin:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span class="" style="font-size:10pt; font-family:'Lucida Console'">/gate/output/root/setRootSinglesBlurringFlag 1</span></div>
<div class="" style="margin:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span class="" style="font-size:10pt; font-family:'Lucida Console'">/gate/output/root/setRootSinglesSpblurringFlag 1</span></div>
<div class="" style="margin:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span class="" style="font-size:10pt; font-family:'Lucida Console'">/gate/output/root/setRootSinglesThresholderFlag 1</span></div>
<div class="" style="margin:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span class="" style="font-size:10pt; font-family:'Lucida Console'">/gate/output/root/setRootSinglesUpholderFlag 1</span></div>
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Can anyone help? I am unsure if I am missing a sensitive detector definition somewhere?</div>
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Thanks</div>
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<div class="" style="margin:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
Allison</div>
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<div class="" style="margin:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<b class=""><span class="" style="font-family:Georgia,serif; color:rgb(0,160,205)">Allison Craig</span></b><span class="" style="font-size:12pt; font-family:'Times New Roman',serif"></span></div>
<div class="" style="margin:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<b class=""><span class="" style="font-family:Georgia,serif">Principal Radioisotope Physicist</span></b></div>
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<span class="" style="font-family:Georgia,serif">Joint Department of Physics</span></div>
<div class="" style="margin:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span class="" style="font-family:Georgia,serif">The Royal Marsden NHSFT</span><span class="" style="font-size:12pt; font-family:'Times New Roman',serif"></span></div>
<div class="" style="margin:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span class="" style="font-family:Georgia,serif">Sutton PhD Office: 0208 661 3086</span><span class="" style="font-size:12pt; font-family:'Times New Roman',serif"></span></div>
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<span class="" style="font-family:Georgia,serif"><a href="mailto:allison.craig@icr.ac.uk" class="" style="color:purple; text-decoration:underline"><span class="" style="color:blue">allison.craig@icr.ac.uk</span></a></span><span class="" style="font-size:12pt; font-family:'Times New Roman',serif"></span></div>
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