There is an offset between absorption and DCT volume when using '2DFBP' method (no offset if using '3DART').
Any said:
"I was working on, but didn't finish final testing. In principle, it's fairly trivial to fix. In the same functions it may be necessary to add a check on the detector flip and the sense of rotation in order to get the reconstruction the right way around, as I'm not sure this made it to all versions."
Status: it seems to be related to some inconsistency with labgeo parameters.
Have to take care of rotation direction depending on eventual flip.
Assigned to: Andy