Fig. 1.

Linear regression fit of measured vs synthetic Hct and ECV for published model. Poor regression fit to the published model (a) with a bias of 2.2% on Bland-Altman analysis (b). However at the mid-free wall, the regression fit for ECV is substantially better (c) with an expected inverse bias on Bland-Altman analysis due to the bias seen in the Hct (d). Dashed line in A and C represents line of identity. For Bland-Altman plots, solid line represents mean difference and dashed lines (B and D) are ±1.96SD