Liver DCDI:  revisiting the Monotail concept (AIF=VIF with t>3 min).  This might allow to perform a segmented fir for {F,Ve} only for this part of the curve thus stabilizing the kit.  This does not make any assumptions about the delays {Ta,Tv}, i.e. would work for any delays. Interestingly, Ki also can be derived as it is not an independent variable of in the trio of {F,Ve,Ki}