Imaging: high relaxivities and strong vascular signal enhancement for NaGdF4 nanoparticles designed for dual MR/optical imaging (Adv. Healthcare Mater. 11/2013).

Naccache, Rafik; Chevallier, Pascale; Lagueux, Jean; Gossuin, Yves; Laurent, Sophie; Vander Elst, Luce; Chilian, Cornelia; Capobianco, John A et al. · Adv Healthc Mater · 2013

basic_science · Level V

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Abstract

Tripositive gadolinium-ion doped NIR-to-NIR upconverting paramagnetic nanoparticles are efficiently detected are NIR imaging techniques but can also provide efficient "positive" contrast in MRI. On page 1478 John A. Capobianco, Marc-André Fortin, and co-workers show that citrate-coated nanoparticles present the lowest relaxometric ratios reported for NaGdF4 nanoparticle suspensions. IV-injected nanoparticles evidence long blood retention times in mice while biodistribution studies show elimination through the reticuloendothelial and urinary systems.

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