[Gate-users] SPECT projection artifact

[Miriam Dixon]

Hi Gate-Users,

I am running SPECT simulations in GATEv9.0, collecting the output as .sin
projection files. I am curious if anyone recognises, and knows the cause
of, the little line of counts that consistently appear in the top left hand
corner of my projection data? I have circled it in yellow in the image
attached.
[image: LineArtifact.PNG]
As far as I know it isn't a problem as it doesn't interfere with the rest
of my projection data, but I would be very interested to know if anyone
else has seen it.

Cheers,
Miriam
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