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. 2019 Dec 17;24(24):4629. doi: 10.3390/molecules24244629

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© 2019 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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T₂ magnetic resonance imaging (MRI) phantoms images acquired at 9.4 T (TR = 5000 ms, TE = 8 ms): (a) NPFe@FeOx@SiO₂-PEG 2 months old, (b) NPFe@FeOx@SiO₂-PEG 2 weeks old, (c) NPFe@FeOx@SiO₂ 2 months old, (d) NPFe@FeOx@SiO₂ 2 weeks old and at 1 T (TR = 5000 ms, TE = 8 ms), (e) NPFe@FeOx@SiO₂-PEG 2 months old, (f) NPFe@FeOx@SiO₂-PEG 2 weeks old, (g) NPFe@FeOx@SiO₂ 2 months old, and (h) NPFe@FeOx@SiO₂ 2 weeks old. Concentrations are in mmol.L⁻¹, R stands for RESOVIST® (0.5mM) and W stands for water.