[Castor-users] Scatter rate estimation for LM-TOF-MLEM

[jbaran]

Dear Castor Developers and Users,

I am trying to incorporate the information about the scatter correction 
in LM-TOF-MLEM reconstruction. I have calculated the scatter fraction 
for each TOF bin. The values of scatter rate are in range 1-2. I have 
applied them for the reconstruction, however the reconstructed images 
seem to be not corrected for scatter. Please find the attached 
screenshot. On the top panel, the reconstructed image with true+scatter 
coincidences is presented and on the bottom the same coincidences were 
used but with scatter correction applied. On the right corresponding 
line profiles are presented (ots - no scatter correction; corrected1 - 
scatter correction applied)

FYI: The total number of coincidences used for the reconstruction is 1 
order of magnitude lower than the number of possible LORs.

Do you have any idea what kind of values should be applied for the 
scatter rate? Did you have any similar case and found the solution how 
the scatter rate should be calculated?

All the best,
Jakub
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