[Castor-users] artifacts in the reconstruction

[STUTE Simon]

Hi Alessandro,


The artifacts are totally normal if you do not apply a normalization correction, especially with low number of detector panels.


As for the min angle difference, did you let CASToR compute the sensitivity image in both cases (135 and 180) ? Are they different ?

The min angle difference is not apply in the loop over the data, so it should be applied by yourself when building the datafile.

Also, how did you build the geometry of your scanner, from your own LUT file or using the GATE converter ?


By the way, your emails successfully reached the mailing list.


Best

Simon


________________________________
De : Castor-users <castor-users-bounces at lists.castor-project.org> de la part de Alessandro Pilleri <a.pilleri at gmail.com>
Envoyé : mardi 15 décembre 2020 16:37
À : castor-users at lists.castor-project.org
Objet : [Castor-users] artifacts in the reconstruction

Dear castor-users,
I give an update to my previous email.
I tried to change the min angle difference in the geometry file from 135 (meaning a coincidence schema 1vs3) to 180 (meaning a coincidence schema 1vs1) and the two reconstructions provided exactly the same results.

Could the artifact be related to some kind of bug (or a misuse by my side) related to the "min angle difference"?

Thank you
Alessandro
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