[Gate-users] Gate-users Digest, Vol 176, Issue 36

Bdour Alfaris alfarisbdour at gmail.com
Wed Feb 10 11:40:53 CET 2021


Hello,

I have a simple phantom using Gate and I scanned it using CT (as the Gate
examples) and I want to find the dose absorbed by this phantom.
I appreciate any help you can provide.

Regards,

On Mon, 25 Jan 2021 at 14:46, <
gate-users-request at lists.opengatecollaboration.org> wrote:

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> Today's Topics:
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>    1. Re: How to set the timing resolution of Two-layer detector
>       (Ane Etxebeste)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 25 Jan 2021 10:35:49 +0100
> From: Ane Etxebeste <ane.etxebeste at creatis.insa-lyon.fr>
> To: Maxime Toussaint <Maxime.Toussaint at USherbrooke.ca>, 김수환
>         <ksh2454178 at naver.com>, "
> gate-users at lists.opengatecollaboration.org"
>         <gate-users at lists.opengatecollaboration.org>
> Subject: Re: [Gate-users] How to set the timing resolution of
>         Two-layer detector
> Message-ID:
>         <835a2a0f-def1-0866-26a2-5278585d34d9 at creatis.insa-lyon.fr>
> Content-Type: text/plain; charset="utf-8"; Format="flowed"
>
> Hi,
>
> If the layer volumes have different names, in principle, you should be
> able to apply "localTimeResolution" module.
>
> Below you can find the commands to set a different time resolution to
> two different SD detectors called layer1 and layer2.
>
>
> /gate/digitizer/Singles/insert localTimeResolution
>
> /gate/digitizer/Singles/localTimeResolution/chooseNewVolume layer1
> /gate/digitizer/Singles/localTimeResolution/layer1/setTimeResolution 10 ns
> /gate/digitizer/Singles/localTimeResolution/chooseNewVolume layer2
> /gate/digitizer/Singles/localTimeResolution/layer2/setTimeResolution 15 ns
>
>
> Did it work?
>
>
> Best regards,
>
> Ane
>
>
> On 25/01/2021 06:04, Maxime Toussaint wrote:
> > Greetings,
> >
> > I have never worked with the "Compton camera imaging" part of Gate.
> > Read carefully that section to make sure it applies for your case of
> > interest.
> >
> > About your second question, I believe that Gate user either set the
> > same tof resolution for both layer or add the tof blur after the
> > simulation. The concept of layer-dependent tof resolution is kinda new
> > compared to Gate, after all.
> >
> > About your third question, I would, assuming that Gate can't define a
> > layer-dependent tof resolution, add the tof blur after the simulation.
> >
> > Bests,
> > Maxime Toussaint
> > ------------------------------------------------------------------------
> > *De :* 김수환 <ksh2454178 at naver.com>
> > *Envoyé :* 24 janvier 2021 23:40
> > *À :* Maxime Toussaint <Maxime.Toussaint at USherbrooke.ca>;
> > gate-users at lists.opengatecollaboration.org
> > <gate-users at lists.opengatecollaboration.org>
> > *Objet :* Re: [Gate-users] How to set the timing resolution of
> > Two-layer detector
> >
> > Hi Maxime Toussaint.
> >
> > Thank you very much for your reply
> >
> > I have seen '6.4.7.Local time resolution' in the GATE user guide.
> >
> > It looks possible, doesn't it?
> >
> > If not, how do GATE users generally use?
> >
> > Do you enter the average of the two time resolution values?
> >
> > Very difficult
> >
> > Thank you.
> >
> > Su Hwan Kim
> >
> > -----Original Message-----
> > *From:* "Maxime Toussaint"<Maxime.Toussaint at USherbrooke.ca>
> > *To:*
> > "gate-users at lists.opengatecollaboration.org"<
> gate-users at lists.opengatecollaboration.org>;
> > *Cc:*
> > *Sent:* 2021-01-25 (월) 12:16:16 (GMT+09:00)
> > *Subject:* Re: [Gate-users] How to set the timing resolution of
> > Two-layer detector
> >
> > Greetings,
> > To the best of my knowledge, the Single digitizer treat every crystal
> > equal. Thus, you cannot use Gate as-is to set multiple values of
> > timing resolution. You must either modify Gate to enable this feature
> > or add the timing blur after the simulation.
> > Bests,
> > Maxime Toussaint
> > ------------------------------------------------------------------------
> > *De :* Gate-users <gate-users-bounces at lists.opengatecollaboration.org>
> > de la part de 김수환 <ksh2454178 at naver.com>
> > *Envoyé :* 24 janvier 2021 21:16
> > *À :* gate-users at lists.opengatecollaboration.org
> > <gate-users at lists.opengatecollaboration.org>
> > *Objet :* [Gate-users] How to set the timing resolution of Two-layer
> > detector
> >
> > Dear GATE users
> >
> > I'm designing a two-layer PET detector.
> >
> > I know the time resolution for each crystal.
> >
> > The time resolution of the crystal at the bottom is 140.8 ps and the
> > crystal at the top is 244.0 ps.
> >
> > How do I set the digitizer?
> >
> > Below is the digitizer in my macro file.
> >
> > ----------------------------------------------------------------------
> >
> > #D I G I T I Z E R
> >
> > /gate/digitizer/Singles/insert adder
> >
> > /gate/digitizer/Singles/insert readout
> >
> > /gate/digitizer/Singles/readout/setDepth 4
> >
> > /gate/digitizer/Singles/insert blurring
> >
> > /gate/digitizer/Singles/blurring/setLaw linear
> >
> > /gate/digitizer/Singles/blurring/linear/setResolution 0.15
> >
> > /gate/digitizer/Singles/blurring/linear/setEnergyOfReference 511. keV
> >
> > /gate/digitizer/Singles/insert thresholder
> >
> > /gate/digitizer/Singles/thresholder/setThreshold 450. keV
> >
> > /gate/digitizer/Singles/insert upholder
> >
> > /gate/digitizer/Singles/upholder/setUphold 650. keV
> >
> > /gate/digitizer/Singles/insert timeResolution
> >
> > ???????????????????????????????????????????
> >
> > -----------------------------------------------------------------------
> >
> > I need your help.
> >
> > Thank you.
> >
> >
> >
> > _______________________________________________
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> > Gate-users at lists.opengatecollaboration.org
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