Table 2 Comparison of measuring blood volume (V_blood) with reduced ferumoxytol doses (N = 1, for each dose) in mg/kg of iron (Fe), and percentage of the typical dose used in this study (N = 12). Smaller doses resulted in a reduced change in post-contrast LV T₁, and a shorter ferumoxytol half-life, but did not produce a significantly different normalized blood volume (p = 0.95, Mann-Whitney U), and except for the 50% dose, the percentage differences from the blood volumes for each subject were within the calculated repeatability coefficient (14%)

From: Blood volume measurement using cardiovascular magnetic resonance and ferumoxytol: preclinical validation