Particles of magnetite, Fe3O4, accumulate preferentially in the liver and spleen after intravenous injection. Their magnetic fields drastically decrease echo intensities in spin-echo proton magnetic resonance imaging sequences, as demonstrated by experiments on dogs injected with 10 mg/kg of 0.05-micron particles.
No takes yet. Share an insight, caveat, or question.
Dias et al. (1986) studied this question.
Synapse has enriched one closely related paper. Consider it for comparative context: