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<p>Hi Hadi,</p>
<p>The PSF is applied to the sensitivity image during its
calculation, so if you performed a PSF reconstruction with a
sensitivity image generated from a reconstruction without PSF (or
with a different PSF kernel), you will get artefacts.</p>
<p>Best regards,<br>
Thibaut</p>
<div class="moz-cite-prefix">On 20/05/2022 09:29, Hadi Rezaei wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAEygHBm7Stb4NwJhDE5_biH7dUkC6wECWBNMbvJYZfrQM1g6LQ@mail.gmail.com">
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<div>Dear CASToR users and developers <br>
</div>
<div>I reconstructed a simulated image quality phantom without
PSF and then reconstructed it with PSF using the created
sensitivity image. But I found that the PSF model has
artifacts. <br>
</div>
<div>What could be the reason? my reconstruction command is
below and two images with PSF and without PSF are attached.</div>
<div>Command line: ./castor-recon -df IEC130s_df.Cdh -dout
IECwithPSF130s -opti MLEM -it 10:20 -th 40 -dim 256,256,827
-fov 600,600,1940 -atn myMapFileName-MuMap.hdr -sens
IEC130s_sensitivity.hdr -conv gaussian,3,3,2.5::psf <br>
</div>
<div>Best regards.</div>
<div>Hadi<br>
</div>
<div><br>
</div>
</div>
<br>
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</blockquote>
<pre class="moz-signature" cols="72">--
Thibaut MERLIN -- PhD
Docteur en Imagerie Médicale au Laboratoire de Traitement de l'Information Medicale (LaTIM - INSERM UMR 1101)
Institut Brestois de recherche en Bio-Santé (IBRBS)
12 Avenue Foch, 29200 Brest, FRANCE
Tel: 06.75.12.24.90</pre>
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