[Gate-users] Gate-users Digest, Vol 130, Issue 8

Thu Mar 16 15:46:55 CET 2017

Hi.
How to use that commands for energy resolution and blurring is obvious. But
the problem is if we change the crystal or collimator in simulation, we
should change the number in front of those commands or not. And if yes,
what should it be. Is there any references?

On Wed, Mar 8, 2017 at 6:04 PM, <
gate-users-request at lists.opengatecollaboration.org> wrote:

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> Today's Topics:
>
>    1. digitizer (zeinab TELIKANI)
>    2. Re: digitizer (Pietrzyk, Uwe)
>    3. problem with .IAEAphsp format (Consuelo Guardiola)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 8 Mar 2017 11:06:32 +0000 (UTC)
> From: zeinab TELIKANI <telikani_z at yahoo.com>
> To: "gate-users at lists.opengatecollaboration.org"
>         <gate-users at lists.opengatecollaboration.org>
> Subject: [Gate-users] digitizer
> Message-ID: <291183458.1490877.1488971192371 at mail.yahoo.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi
>
> Iwant to simulate a SPECT camera, but I do not know the amount of energy
> resolution and local blurring of this camera fordifferent crystals and
> collimators. How can I define resolution and spatial blurringin digitizer?
>
> /gate/digitizer/Singles/blurring/inverseSquare/setResolution (
> fordifferent crystals ???)
> /gate/digitizer/Singles/blurring/inverseSquare/setEnergyOfReference 140
> keV
>
> /gate/digitizer/Singles/spblurring/setSpResolution(for different
> collimators???)
>
>
>
>
>
> Is it necessary to define these Command lines in digitizer forgate
> simulation?
>
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> ------------------------------
>
> Message: 2
> Date: Wed, 8 Mar 2017 12:18:24 +0000
> From: "Pietrzyk, Uwe" <u.pietrzyk at fz-juelich.de>
> To: zeinab TELIKANI <telikani_z at yahoo.com>
> Cc: "gate-users at lists.opengatecollaboration.org"
>         <gate-users at lists.opengatecollaboration.org>
> Subject: Re: [Gate-users] digitizer
> Message-ID: <A8524191-B9C3-451D-A354-85C2239B77FF at fz-juelich.de>
> Content-Type: text/plain; charset="iso-8859-1"
>
>
> Hello Zeinab Telikani,
>
> in fact, there are options to be set in the digitiser part.
> You may have a look at the benchmark for SPECT,
> where the following lines are copied from:
>
>
> # D I G I T I Z E R
> #####
> # The digitizer tracks what happens in the detection system and in the
> electronics
> # Build a digitizer that first computes the centroid of interactions
> ##
> /gate/digitizer/Singles/insert adder
> /gate/digitizer/Singles/insert blurring
> /gate/digitizer/Singles/blurring/setLaw linear
> /gate/digitizer/Singles/blurring/linear/setResolution 0.10
> /gate/digitizer/Singles/blurring/linear/setEnergyOfReference 140. keV
> /gate/digitizer/Singles/blurring/linear/setSlope 0.001 1/keV
> /gate/digitizer/Singles/insert spblurring
> /gate/digitizer/Singles/spblurring/setSpresolution 2.0 mm
> /gate/digitizer/Singles/spblurring/verbose 0
> /gate/digitizer/Singles/insert thresholder
> /gate/digitizer/Singles/thresholder/setThreshold 20. keV
> /gate/digitizer/Singles/insert upholder
> /gate/digitizer/Singles/upholder/setUphold 190. keV
>
> also, there is an example for SPECT you can find in every GATE
> distribution.
>
> I hope this helps!
>
> Kind regards,
>
> Uwe Pietrzyk
>
>
> /----------------------------------------------------------------------
> Prof. Dr. Uwe Pietrzyk
> Diplom-Physiker
> Institut für Neurowissenschaften und Medizin / INM-4
> Forschungszentrum Jülich GmbH
> 52425 Jülich
> Tel: +49-2461-61 4763
> Fax: +49-2461-61 2820
> Mobil: +49-162-103-4871
> eMail: U.Pietrzyk at fz-juelich.de
> http://www.fz-juelich.de/inm/inm-4/DE/Home/home_node.html
> &
> Bergische Universität Wuppertal
> Fakultät für Mathematik und Naturwissenschaften
> Büro:  D.08.01
> Gaußstr. 20
> 42097 Wuppertal
> Tel: +49-(0)202-439-3523
> Fax: +49-(0)202-439-2811
> eMail: Uwe.Pietrzyk at uni-wuppertal.de
> http://www.medizinphysik.uni-wuppertal.de
> ----------------------------------------------------------------------/
>
> On 08 Mar 2017, at 12:06, zeinab TELIKANI <telikani_z at yahoo.com> wrote:
>
> > Hi
> > I want to simulate a SPECT camera, but I do not know the amount of
> energy resolution and local blurring of this camera for different crystals
> and collimators. How can I define resolution and spatial blurring in
> digitizer?
> > /gate/digitizer/Singles/blurring/inverseSquare/setResolution  ( for
> different crystals ???)
> > /gate/digitizer/Singles/blurring/inverseSquare/setEnergyOfReference 140
> keV
> > /gate/digitizer/Singles/spblurring/setSpResolution (for different
> collimators???)
> >
> >
> > Is it necessary to define these Command lines in digitizer for gate
> simulation?
> > _______________________________________________
> > Gate-users mailing list
> > Gate-users at lists.opengatecollaboration.org
> > http://lists.opengatecollaboration.org/mailman/listinfo/gate-users
>
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> ------------------------------
>
> Message: 3
> Date: Wed, 8 Mar 2017 15:34:16 +0100 (CET)
> From: Consuelo Guardiola <guardiola at imnc.in2p3.fr>
> To: Gate-users at lists.opengatecollaboration.org
> Subject: [Gate-users] problem with .IAEAphsp format
> Message-ID:
>         <975531951.8529622.1488983656371.JavaMail.zimbra at imnc.in2p3.fr>
> Content-Type: text/plain; charset="utf-8"
>
> Dear Gate users,
>
> If I try to gather the phase space in .IAEAphsp format in both Gate v7.0
> and v7.1, it does not work. Apparently, it does not get any error-file
> back, but in the running-file I find this:
>
> GatePhaseSpaceActor.cc (l.296): Actor phase space: particle not available
> in IAEA format.
>
> (no matter the version of Gate that I use or even running different jobs
> to discard a possible particle/material issue)
>
> But, unexpectedly, I get an empty (0 size) output.IAEAphsp file.
>
> Does anyone know what happens?
>
> Thanks in advance,
> Consuelo.
>
>
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> End of Gate-users Digest, Vol 130, Issue 8
> ******************************************
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-- 
Merisa Saber
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