Hb and Hct are inversely correlated with OEF before and after HSCT. Each HSCT recipient’s data points are shown with an arrow oriented from before HSCT to after HSCT. The 95% CI (shaded) and regression line (red) are derived from the OEF and CBF measurements of the CRTT cohort. (A) Correlation between 1/Hb and OEF before HSCT (Spearman's ρ, 0.818; P = .004) and after HSCT (Spearman’s ρ, 0.842; P = .002). (B) Correlation between 1/Hct and OEF before HSCT (Spearman’s ρ, 0.869; P = .0011) and after HSCT (Spearman’s ρ, 0.952; P < .0001). (C) Correlation between 1/Hb and CBF before HSCT (Spearman’s ρ, 0.479; P = .162) and after HSCT (Spearman’s ρ, 0.115; P = .751). (D) Correlation between 1/Hct and CBF before HSCT (P = .162) or after HSCT (P = .726).