[Castor-users] issue with PSF model

[tmerlin]

Hi Hadi,

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.

Best regards,
Thibaut

On 20/05/2022 09:29, Hadi Rezaei wrote:
> Dear CASToR users and developers
> 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.
> What could be the reason? my reconstruction command is below and two 
> images with PSF and without PSF are attached.
> 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
> Best regards.
> Hadi
>
>
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-- 
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

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