[Gate-users] Ring difference

[Abdella Mohammednur]

Dear Mr. Dominik Richter,

Thank you very much for your help. I hope it will help me. But, can it be
applicable for CylindricalPET scanner? since  I am using CylindricalPET
scanner.


Thank you again


On Mon, Nov 19, 2012 at 4:39 PM, Dominik Richter <Richter_Dominik at gmx.de>wrote:

> Dear Mr. Abdella,
>
> the axial extent of the coincidences allowable in 3D PET is characterized
> by the ring difference. I'm not sure if it is possible to use the digitizer
> to filter coincidences that are outside the maximum ring difference (e.g.
> to save memory). But if you use ecat7 output for getting sinograms you can
> use:
> /gate/output/ecat7/maxringdiff 79
> /gate/output/ecat7/span 3
> /gate/output/ecat7/mashing 1
>
> I hope this helps,
> best regards,
>
> Dominik Richter
>
>
> -------- Original-Nachricht --------
> > Datum: Mon, 19 Nov 2012 15:59:19 +0900
> > Von: Abdella Mohammednur <abdellanur at gmail.com>
> > An: gate-users at lists.opengatecollaboration.org
> > Betreff: [Gate-users] Ring difference
>
> > Hi Dear Users,
> >
> > Currently, I am simulating multi-ring system PET scanner. I wonder if
> > anyone could help me how to define ring difference on GATE environment.
> > in addition, if there is a way to estimate the number of scattered
> events.
> >
> > Thank you in advance
> >
> > Abdella
>
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