Re: simulate PET activity

Hi,

the discussion you mentioned
(http://www.fluka.org/web_archive/earchive/new-fluka-discuss/4235.html)
explains how to score photons coincidence using the DETECT estimator.
This allows the scoring of events in coincidence in two different
regions (or set of regions) used as TRIGGER and DETECTOR.
As explained in the manual "The output of DETECT
<http://www.fluka.org/fluka.php?id=man_onl&sub=22> is a distribution of
energy deposited per event in the region(s) making up the detector",
then this quantity must be related to the initial activity.
Sorry, I am not expert and cannot help more than this!

Cheers,
Lucia

Il 16/10/2012 18:59, Aafke Kraan ha scritto:
> Hello,
>
> I was wondering if someone can help me with the following. We have
> developed a PET module and have taken PET data after having irradiated a
> PPMA target with a certain amount of protons in a certain time frame.
> Now we would like to compare our PET data with Monte Carlo predictions
> for the activity.
>
> First, I thought I could somehow make use of the URSBIN flag ACTIVITY.
> However, studying in more detail the literature (mostly Parodi etal) I
> saw that they do not use this flag at all, but make a prediction for the
> PET activity in a different way, i.e. by calculating the amount of beta+
> emitters using proton beam fluence and experimental cross sections.
> However, this code is not public.
>
> In addition, I saw a previous discussion here
> http://www.fluka.org/web_archive/earchive/new-fluka-discuss/4235.html
> but unfortunately from this I still haven't really understood how to
> compare it.
>
> I was wondering if anyone knows what is the best way to predict PET
> activity distributions with FLUKA, so we can compare them with our PET
> data. I would be really grateful for any help or instructions!
> Thanks!
>
> Best wishes,
> Aafke Kraan
>
Received on Thu Oct 25 2012 - 12:49:14 CEST