[Castor-users] Attenuation Image and Coefficients in PET List-mode Recon

[M.R Teimoori]

Hello,

When reconstructing PET list-mode data with attenuation correction, CASToR
requires an attenuation correction factor for each event in the input *.cdf
file. Also, if the attenuation correction flag is on, an attenuation image
needs to be passed to CASToR which, as far as I understand, is used during
normalization.

I am wondering why CASToR doesn't use the input attenuation image to
calculate an attenuation correction factor for each event automatically?

Thank you all,

Cheers,
Reza
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