[gate-users] different energy thresholds for ECAT blocks

[Qianmei Zhang]

Hello Gate Users,

Is it possible to set different energy thresholds for different blocks 
in PET scanner? Suppose that i have a Ecat 953 system ( 2 block rings 
and each ring has 48 blocks).  I want set 0.1 MeV as  the energy 
threshold for block 0 to 47  and 0.38 MeV as the energy threshold for 
Block 48 to 95.

I opened the source code ---GateThresholder.cc  and there is a line

if ( inputPulse->GetEnergy() >= m_threshold)
......

I changed the line to
if ( inputPulse->GetEnergy() >= m_threshold && inputPulse->GetblockID() 
 >=48  ||
      inputPulse->GetEnergy() >= 0.1 && inputPulse->GetblockID() <=47)
......

(m_threshold is 0.38 MeV in the Gate input file)

When i recompile gate, it said that ----no matching function for call to 
`GatePulse::
   GetBlockID() const'

Can someone tell me what the variable name of blockID is in the 
GateThresholder.cc or is there any other way to handle this question.

Thanks.

Qianmei