[Gate-users] Missing scatter in sensitive detector?

[Allison Craig]

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:
[cid:image001.jpg at 01D4783D.4CEF5B00]

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.

This e-mail message is confidential and for use by the addressee only.  If the message is received by anyone other than the addressee, please return the message to the sender by replying to it and then delete the message from your computer and network.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opengatecollaboration.org/pipermail/gate-users/attachments/20181109/960cc3b9/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 11016 bytes
Desc: image001.jpg
URL: <http://lists.opengatecollaboration.org/pipermail/gate-users/attachments/20181109/960cc3b9/attachment-0001.jpg>