[Gate-users] Random coincidences

[Simon Stute]

Hi Anayisse,

Maybe you have a too low activity, for a too big attenuation map ?? Because
there is no command that permits you to filter out your random coincidences.

Simon

2007/12/10, anayisse arnaud <anayisse_arnaud at hotmail.com>:
>
>
> Dear Gate users,
>
> I simulated a PET scanner, I used only the command line :
> /gate/digitizer/Coincidences/setWindow 10. ns ,  for coincidence sorting.
>
> When I compared the two singles event IDs in the coincidences file,
> I found that the IDs are identical for each coincidence event !
> It means that there are no Random coincidences ?
> but I don't understand this result because i didn't use any
> other command to filter out the Random coincidences ?
>
> What do you think please?
> I would be grateful if anyone could explain to me the reason ?
>
> Best Regards
>
> Anayisse
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