[Gate-users] Missing scatter in sensitive detector?

[Uwe.Pietrzyk]

Hello Alison Craig,

I would like to suggest having a look at the Benchmark
Gamma-Camera, especially the analysis file “.C” which
reads the ROOT-File and provides some statistics about
the different types of scatter. See also attached file, I found
on my system.

All the best and kind regards,

Uwe Pietrzyk
---------------------------------------
Prof. Dr. Uwe Pietrzyk
Diplom-Physiker
Am Anger 18
50374 Erftstadt
Tel: +49-2235-922038
Fax: +49-2235-922039
Mobil: +49-172-213-2155
eMail: Uwe.Pietrzyk at web.de
---------------------------------------





> On 9. Nov 2018, at 16:02, Allison Craig <Allison.Craig at icr.ac.uk> wrote:
> 
> Hi all
>  
> I have a model of a SPECT system, I have run an acquisition with a Tc99m line source within a cylindrical phantom and am trying to isolate the scattered from the non-scattered photons from within the root file.
>  
> I have removed all Compton and Rayleigh scatter within the phantomSD and crystal and yet my spectrum is still showing some scattered photons:
> <image001.jpg>
>  
> I have set my sensitive detectors as:
>  
> /gate/Phantom/attachPhantomSD
> /gate/compartment/attachPhantomSD
> /gate/shielding/attachPhantomSD
> /gate/SPECThead/attachPhantomSD
> /gate/collimator/attachPhantomSD
> /gate/casing/attachPhantomSD
>  
> And my root output as:
>  
> /gate/output/root/enable
> /gate/output/root/setFileName Test1
> /gate/output/root/setRootSinglesAdderFlag 1
> /gate/output/root/setRootSinglesBlurringFlag 1
> /gate/output/root/setRootSinglesSpblurringFlag 1
> /gate/output/root/setRootSinglesThresholderFlag 1
> /gate/output/root/setRootSinglesUpholderFlag 1
>  
> Can anyone help?  I am unsure if I am missing a sensitive detector definition somewhere?
>  
> Thanks
>  
> Allison
>  
> Allison Craig
> Principal Radioisotope Physicist
> Joint Department of Physics
> The Royal Marsden NHSFT
> Sutton PhD Office: 0208 661 3086
> allison.craig at icr.ac.uk <mailto:allison.craig at icr.ac.uk>
>  
> 
> The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, London SW7 3RP.
> 
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