[Castor-users] Problem with CT reconstruction

Tue Sep 15 17:06:12 CEST 2020

Hi,

I had a quick look, I wouldn't call these artefacts, it's more of a nice artwork :). Something seems to have gone rather wrong, are you sure the matching between scanner description and event indices is correct? I have no other clues currently.

Best

Marina 
________________________________________
De : Castor-users [castor-users-bounces at lists.castor-project.org] de la part de Konstantinos P. Chatzipapas [kwnchatz at upatras.gr]
Envoyé : vendredi 4 septembre 2020 12:00
À : castor-users at lists.castor-project.org
Objet : [Castor-users]  Problem with CT reconstruction

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

--
-------------------------
Konstantinos Chatzipapas
   Medical Physicist, MSc
     University of Patras
https://physicsfeed.blogspot.com/
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