[Gate-users] Sensitivity

[Pietrzyk, Uwe]

Hi Milad,

the best to start understanding how to use the information
from the GATE-simulation stored in a root file may be to
have a look at the PET-benchmark. Also the SPECT-version
may even be helpful. There you can see how to differentiate 
between different types of event and how they are counted
to finally calculate the number of detected events or
coincidences given a number of primary events.
Furthermore you can apply additional cuts to eliminate
scattered events, etc.

Probably some easier examples of using the root file and
how to apply a simple means to evaluate the simulation
you may also find within the EduGATE examples available
for free on the OpenGATE webpage. There are also
README-files available.

I hope this helps for the moment!

All the best and kind regards,

Uwe Pietrzyk


/----------------------------------------------------------------------
Prof. Dr. Uwe Pietrzyk
Diplom-Physiker
Institut für Neurowissenschaften und Medizin / INM-4
Forschungszentrum Jülich GmbH
52425 Jülich
Tel: +49-2461-61 4763
Fax: +49-2461-61 2820
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eMail: U.Pietrzyk at fz-juelich.de
http://www.fz-juelich.de/inm/inm-4/DE/Home/home_node.html
&
Bergische Universität Wuppertal
Fakultät für Mathematik und Naturwissenschaften
Büro:  D.08.01
Gaußstr. 20
42097 Wuppertal
Tel: +49-(0)202-439-3523
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eMail: Uwe.Pietrzyk at uni-wuppertal.de
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----------------------------------------------------------------------/

On 23 Dec 2016, at 23:13, Milad Fard <miladfard.mailbox at gmail.com> wrote:

> Thanks for your fast reply, this is helps me already a lot. Indeed I read
> this  paper,but I don't know how calculate the sensitivity from ROOT output.
> Please help me 
> 
> Best,
> 
> 
> 
> On Sat, Dec 24, 2016 at 12:23 AM, Pietrzyk, Uwe <u.pietrzyk at fz-juelich.de> wrote:
> 
> Hi Milad,
> 
> within the NEMA specifications there are also those for
> small animal imaging with PET. You should check such
> documentation and also previous publication like that, which
> you can find via the link given below.
> 
> Hope this helps,
> 
> Kind regards,
> 
> Uwe Pietrzyk
> 
> 
> https://www.ncbi.nlm.nih.gov/pubmed/22699999
> "NEMA NU 4-2008 comparison of preclinical PET imaging systems."
> /----------------------------------------------------------------------
> Prof. Dr. Uwe Pietrzyk
> Diplom-Physiker
> Institut für Neurowissenschaften und Medizin / INM-4
> Forschungszentrum Jülich GmbH
> 52425 Jülich
> Tel: +49-2461-61 4763
> Fax: +49-2461-61 2820
> Mobil: +49-162-103-4871
> eMail: U.Pietrzyk at fz-juelich.de
> http://www.fz-juelich.de/inm/inm-4/DE/Home/home_node.html
> &
> Bergische Universität Wuppertal
> Fakultät für Mathematik und Naturwissenschaften
> Büro:  D.08.01
> Gaußstr. 20
> 42097 Wuppertal
> Tel: +49-(0)202-439-3523
> Fax: +49-(0)202-439-2811
> eMail: Uwe.Pietrzyk at uni-wuppertal.de
> http://www.medizinphysik.uni-wuppertal.de
> ----------------------------------------------------------------------/
> 
> On 23 Dec 2016, at 09:45, Milad Fard <miladfard.mailbox at gmail.com> wrote:
> 
>> Hello dear gaters
>> 
>> I simulated a 198 KBq spherical 18F point source to measure the absolute sensitivity of my system (microPET)
>> The  source was positioned at the center of the FOV and scanned for 300 s.
>> 
>> I would like to evaluate the sensitivity of my system.
>> Any idea will be greatly appreciated.
>> 
>> Best regards,
>> 
>> Milad Fard
>> 
>> Nuclear physics PhD student 
>> University of Guilan
>> _______________________________________________
>> Gate-users mailing list
>> Gate-users at lists.opengatecollaboration.org
>> http://lists.opengatecollaboration.org/mailman/listinfo/gate-users
> 
> 

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