[Gate-users] Delayed coincidence window for randoms correction

Seb sebastien.jan at cea.fr
Wed Feb 10 12:57:33 CET 2010


Ida Häggström a écrit :
> Dear Gaters,
> I'm trying to use a delayed window to estimate the randoms coincidences
> but have not quite figured out how to do this yet.
>
> Below I've attached part of my digitizer module where I've tried adding a
> delayed window (delayedCoincidences) as well as a promt one (cutSingles). I
> don't know if this is the correct way to do it? I use root output and want
> to save both the delayed branch and prompt branch I guess... 

Hi,
Check the PET benchmark.
Should be an example for your application (macro files for simulation & 
root program for your analysis)

Cheers
Seb
> Can you
> immediately (i.e. in GATE) subtract the randoms from the prompts (and later
> rebin into a randoms corrected sinogram) or do you have to arrange the
> randoms into one sinogram and the promts into another one and then perform
> randoms correction?
>
>   



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