[gate-users] questions spect simulation.

Jingyan Xu jxu18 at jhmi.edu
Mon Nov 29 18:16:43 CET 2004


Hi 

I was running a simple SPECT simulation, with a parallel collimator, a
box shaped phantom and source.  But in the interfile projection data,
the activities don't look like they are from a sphere, but concentrated
around the edges of a square.  I tried to use different shapes/sizes for
the phantom and sphere, the square in the interfile projection remained
the same.  I attached the macro files and the interfile output.  I'd
appreciate if someone could take a look at them and let me know what the
problems are.  

Thanks.
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