Hi,

I am trying to simulate a pinhole SPECT system in GATE. I want to block gamma penetration through collimator in this simulation(no penetration of pinholes through collimator other than holes as in ideal collimator). How can I stop penetration?

am I need to modify the following command:

/gate/physics/Gamma/SetCutInRegion collimator 0.1 mm

or any other command. I am new to GATE simulation and I will be grateful for your reply.

Thanks in Advance !

Manu