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Issue 45, 2016
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Ultra-efficient, widely tunable gold nanoparticle-based fiducial markers for X-ray imaging

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Abstract

We show the development of a new class of highly efficient, biocompatible fiducial markers for X-ray imaging and radiosurgery, based on polymer shells encapsulating engineered gold nanoparticle (AuNP) suspensions. Our smart fabrication strategy enables wide tunability of the fiducial size, shape, and X-ray attenuation performance, up to record values >20 000 Hounsfield units (HU), i.e. comparable to or even higher than bulk gold. We show that the NP fiducials allow for superior imaging both in vitro and in vivo (yet requiring 2 orders of magnitude less material), with strong stability over time and the absence of classical “streak artifacts” of standard bulk fiducials. NP fiducials were probed in vivo, showing exceptional contrast efficiency, even after 2 weeks post-implant in mice.

Graphical abstract: Ultra-efficient, widely tunable gold nanoparticle-based fiducial markers for X-ray imaging

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Publication details

The article was received on 05 Sep 2016, accepted on 07 Oct 2016 and first published on 13 Oct 2016


Article type: Paper
DOI: 10.1039/C6NR07021C
Citation: Nanoscale, 2016,8, 18921-18927
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    Ultra-efficient, widely tunable gold nanoparticle-based fiducial markers for X-ray imaging

    G. Maiorano, E. Mele, M. C. Frassanito, E. Restini, A. Athanassiou and P. P. Pompa, Nanoscale, 2016, 8, 18921
    DOI: 10.1039/C6NR07021C

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