Fig. 4

Bland–Altman plot of lesion K_i differences obtained with the IDIF minus the PIF scaled to the scan time interval at 30–60 min p.i. (PIF_30) (a), and the PIF scaled to the IDIF at shorter scan time intervals p.i. (PIF_40 and PIF_50) (b, c). To illustrate differences between the comparisons, the scales on the vertical axes are matched in the subfigures. For readability purposes, these Bland–Altman plots with modified axes are shown in Additional file 1: Fig. S2