[Gate-users] Coincidences with generic repeater

[Fernando Rannou]

Hi Leo


PETScanner is a new addition to Gate systems. The source code seems
incomplete, but I'm
probably wrong. I would definitively use PetCylindricalSystem instead.

Is there any special reason you are using PETScanner?

Fernando


On Tue, Jul 30, 2013 at 10:00 AM, Leo Read <leoread at gmail.com> wrote:

> I used PETscanner + gate v6.2 and did not get coincidences with generic
> repeater.
>
>
> On Tue, Jul 30, 2013 at 9:58 AM, Fernando Rannou <fernando.rannou at usach.cl
> > wrote:
>
>> Please specify with version of gate you are having this problem.
>> I use repeaters and CYlindricalPET in 6.1 and I get coincidences
>>
>>
>> Fernando
>>
>>
>> On Tue, Jul 30, 2013 at 9:28 AM, Leo Read <leoread at gmail.com> wrote:
>>
>>> Hi Antonio,
>>>
>>> I have also noticed that coincidences are not generated when the generic
>>> repeater is used. I did not find any solution to this on the forum.
>>>
>>> As a result, I'm writing C code to generating coincidence data based on
>>> hits data in the root output. I have personally found that I don't like how
>>> Gate generates singles output based on the hits output - it doesn't seem to
>>> handle inter-crystal events properly. If you are OK with ignoring this
>>> effect, then you may want to look into looping over the singles data and
>>> generating your own coincidence data.
>>>
>>> If anybody has an alternative solution, please share your thoughts.
>>>
>>> Thanks!
>>>
>>>
>>> On Tue, Jul 30, 2013 at 8:43 AM, Toninho Antonio <acbertolo at gmail.com>wrote:
>>>
>>>> Hi.
>>>>
>>>>
>>>> We are looking to simulate PET systems and when we used the generic
>>>> repeater to replicate the rsectors, using PETScanner or CYlindricalPET,
>>>>  the coincidences was not generated. Besides that when we kept the
>>>> same digitizer and used the ring repeater the coincidences were generated
>>>> correctly.
>>>>
>>>> Does anyone used the generic repeater and was able get the
>>>> coincidences? Is it necessary any specific modifications on digitizer?
>>>>
>>>> The Singles are generated in both cases. We tried with two PET system
>>>> at GATE to test whether the generic repeater was to be used specifically to
>>>> PETScanner.
>>>>
>>>>
>>>> Cheers,
>>>>
>>>>
>>>>
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>>>>
>>>
>>>
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>>
>>
>
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