[gate-users] WARNING : positron found and photonID vector size: 1

[Jin Zhang]

That is because of the much longer positron range in air, which is about 
170 cm for F18. But the average range in water is only 0.06 cm (F18). If 
you can use a small water sphere to hold your source, it may help to 
stop the warning message.

Jin

Mutanga Theodore wrote:

>Hello Gaters,
>
>I had a setup for simulating and measuring the resolution of the
>scanner,since the measurements had to be done in Air, I defined a phantom
>which is a cylinder the same size as the inner diamter of the scanner.
>
>When I set the material as Air I have this warning messages
>
>:[GateTrajectoryNavigator::FindAnnihilationGammasTrackID]  WARNING :
>positron found and photonID vector size: 1
>
>I don't really know what this means but when I use Water as the medium in
>the phantom I don't get this error , how does it affect my simulation ?
>
>Cheers
>
>Theodore
>
>_______________________________________________
>gate-users mailing list
>gate-users at lphe1pet1.epfl.ch
>http://lphe1pet1.epfl.ch/mailman/listinfo/gate-users
>  
>