[Castor-users] Attenuation correction and normalization for list-mode reconstruction

[Zipai Wang]

Dear CASToR users and developers,

I have simulated a digital phantom in GATE and reconstructed the GATE
list-mode using CASToR. In order to perform the normalization I manually
calculated the normalization factors and fed the normalization datafile
into the CASToR for the calculation of Sensitivity image.

In this case, in order to apply the attenuation correction, I believe I
need to calculate the attenuation coefficient for each LORs and feed it
within the normalization datafile. However this is not straightforward for
me because the phantom contains multiple types of material and tissues.

So my question is: 1. I know we can feed atn image to CASToR during the
reconstruction, but in this way how can I apply the normalization?

2. Can the CASToR generate the atten coefficient and output the information
so that I can combine it with the norm factors to form the datafile?


Thank you very much for your help!
-- 
Zipai Wang
Biomedical Engineering PhD student
Stony Brook University
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