Another look at the Portal Vein residual (possible) movement after the registration.  Part of portal vein was manually drawn on 6 slices of the initial timepoints.  Corresponding TAC (VIF) was generated.  If there would be a substantial movement out of plane for the PV, we would have observed  sharp iregularities in this TAC.  However, beside one bump in the last quater the curve is very smooth which indicates that PV majorly remains in the same position.

Corrected the effect:  when new document & file are created as a result of the operation, the document file name may exceed 256 characters which is the MFC limit for VisualC++ 2010.

Liver 4D registration:  Liver ROI could be clipped to exclude the areas outside the liver from the consideration.  There is a x10 time smaller files size (66MB vs  660MBs)