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. 2021 Feb 5;14(2):124. doi: 10.3390/ph14020124

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(a) T₁ and T₂ inverse measurements vs. cobalt and iron millimolar concentration. The slope of these curves corresponds to r₁ and r₂ relaxivities. (b) T₂-weigthed magnetic resonance (MR) images of NP-FA in aqueous solution at various metal concentrations using a Varian 7T micro magnetic resonance imaging (MRI) scanner.