[Castor-users] Problems with cylindricalPET reconstrution for Cherenkov Photons....

[Dania Consuegra]

*Dear Maxime*

*Thanks for answering. **You were right !!!*

*Redefining the attach part of my **Geometry_CylPET.mac **and using
setDepth 4 I get my first images using CASToR for Cherenkov Photon PET….*

Kind regards,

Dania Consuegra Rodríguez

*Phd student **Jožef Stefan Institute*


*#=======================================================================*

*# Detector Configuration (Attaching)*

*#=======================================================================*

*/gate/systems/cylindricalPET/rsector/attach block*

*/gate/systems/cylindricalPET/crystal/attach radiator*

*#/gate/systems/cylindricalPET/module/attach window*

*#/gate/systems/cylindricalPET/module/attach photodetector*

*/gate/radiator/attachCrystalSD*


2018-07-17 5:43 GMT+02:00 Maxime Toussaint <maxime.toussaint at usherbrooke.ca>
:

> Hi,
>
> I am not sure I understand your situation/setup but here are a couple of
> ideas.
>
> First, the "radiator" seems to be your annihilation photons detector while
> "window" and "photodetector" are there for visual appreciation (Not used in
> GATE simulation), am I right? If yes, why are you using
> "/gate/window/attachCrystalSD" over "/gate/radiator/attachCrystalSD"?
> Second, I am not sure which "level" are required by CASToR geom creator,
> but it would be a fair guess to say that "crystal" is one of them (or
> CASToR uses attachCrystalSD to deduce which is the readout depth?). Also,
> it might be worth to attach a copy of your Geometry_CylPET.mac. Not all
> geometry creation/manipulation command of GATE are supported by CASToR
> toolkit and the resulting ".geom" won't help much in that case.
>
> Have a nice day,
> Maxime Toussaint
>
>
>
> On 07/16/2018 08:08 AM, Dania Consuegra wrote:
>
> Dear CASToR users,
>
> I have been able to use CASToR reconstruction with a conventional
> CylindricalPET with nice results. However, I'm having problems with adapt
> my PETscannerfor Cherenkov Photons to a CylindricalPET.
>
>
> For my PETscanner I was defined previously the attach part as follows:
>
>
> /gate/systems/PETscanner/level1/attach block
>
> /gate/systems/PETscanner/level2/attach radiator
>
> /gate/systems/PETscanner/level3/attach window
>
> /gate/systems/PETscanner/level4/attach photodetector
>
> /gate/window/attachCrystalSD
>
>
> The block which is the structure that I repeat in the ring (I have 4
> rings) is now my rsector. The problem is that my radiator (PbF2), my
> window and my photodetector (SiPM) are all inside this main block and I
> repeat each structure individually inside the block. I *c**an*'*t *define in
> the attach part my window as a submodule because is*n*'*t **a *box inside the
> radiator and I *c**an*'*t **define my **photodetector **as a crystal
> because is**n't **a box inside the **window…. *
>
> *I used **setDepth4 (also tested with 2) and the reconstruction **was*
> *n't** useful….*
>
>
> /gate/systems/cylindricalPET/rsector/attach block
>
> /gate/systems/cylindricalPET/module/attach radiator
>
> /gate/systems/cylindricalPET/module/attach window
>
> /gate/systems/cylindricalPET/module/attach photodetector
>
> /gate/window/attachCrystalSD
>
>
> /gate/digitizer/Singles/insert opticaladder
>
> /gate/digitizer/Singles/insert readout
>
> /gate/digitizer/Singles/readout/setDepth 4
>
>
> I also attached the DaniaGeom.geom that was generated by CASToR in the
> config folder….
>
> I think everything is in order except of course, the size of the PbF2
> crystals….
>
> Any help I would really appreciate it….
>
> Kind regards,
>
> Dania Consuegra Rodríguez
>
> *Phd student **Jožef Stefan Institute*
>
>
>
>
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>
>
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