[Castor-users] Problem with CT reconstruction

[STUTE Simon]

Hi,

You are right Thibaut, this is likely due to that.

It is required even with GATE as the detection sensitivity depends on the direction of photons and the position of the detection elements within the panel.

Simon
________________________________________
De : Castor-users <castor-users-bounces at lists.castor-project.org> de la part de tmerlin <Thibaut.Merlin at univ-brest.fr>
Envoyé : lundi 21 septembre 2020 21:16
À : castor-users at lists.castor-project.org
Objet : Re: [Castor-users] Problem with CT reconstruction

Hi Konstantinos,

I noticed there is no blank mesurements correction in your data. I don't
know if they would be required for CT simulations with GATE, but maybe
your artifacts could be related to that ?

Thibaut


On 04/09/2020 12:00, Konstantinos P. Chatzipapas wrote:
> Hello to the CASToR community.!
>
> I have run some MC simulations using GATE and the Moby mouse phantom.
> For the reconstruction I use MLTR and distanceDriven algorithms. The
> final reconstruction, after 8 sets and 25 subsets, still includes some
> artifacts that I cannot understand.
>
> Any help to get rid of the artifacts could be reaaaaally useful.!
>
> cdh/cdf that used with castor, the output hdr/img and the geom file of
> the scanner have been uploaded here:
> https://drive.google.com/drive/folders/1RX6BdyHHoetqUo0LXrQiXyXE1twvyoys?usp=sharing
>
>
>
> The command that we used is:
> ./castor-recon -df /path/to/ct_header_1deg.cdh -dout
> /path/to/reconMLTR_1deg_181 -it 8:25 -vb 2 -proj distanceDriven -opti
> MLTR -dim 181,181,512 -vox 0.2375,0.2375,0.240625
>
>
> Kind Regards,
> Konstantinos
>
>
>
--
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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