[gate-users] Re: Very low number of scatter in GE Discovery

[Schmidtlein, Ross/Sloan-Kettering Institute]

Hi Mikhail,

The only other suggestion I have is to check the ASCII output .cc files
and verify the column location, the ECAT system and the Cylindrical PET
files may have different column locations.  If it still fails to work I
would look at the root files where the data columns are tagged.

ross

-----Original Message-----
From: gate-users-bounces at lphe1pet1.epfl.ch
[mailto:gate-users-bounces at lphe1pet1.epfl.ch] On Behalf Of Fernando
Rannou
Sent: Wednesday, March 08, 2006 7:22 AM
To: GATE feedback and helpline for Users
Subject: Re: [gate-users] Re: Very low number of scatter in GE Discovery

Just make sure you have an OR and not an AND

Fernando


On Wed, 2006-03-08 at 09:56 -0500, Mikhail Shilov wrote:
> Ross,
> 
> Thank you very much for your reply. The corrections in the digitizer 
> setup that you mentioned are very helpful.
> I'm simulating LS camera and I set it up as an ecat system. So the 
> readout depth of 1 corresponds to a block as in a real scanner. I also

> checked my phantom script and I do have:
> 
> /gate/myphantom/attachPhantomSD
> 
> I don't really know what's going on.
> 
> Fernando,
> 
> I use ascii output and then count the number of recorded coincidence 
> with at least one Compton scatter in the phantom. According to the 
> Gate manual it is column #18 and #40 in gateCoincidences.dat Thanks
> 
> -Mikhail
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