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Tri-modal imaging of gold-dotted magnetic nanoparticles for magnetic resonance imaging, computed tomography and intravascular ultrasound: an in vitro study

  • Joel Kuhn
  • , Giorgos Papanastasiou
  • , Cheuk-Wai Tai
  • , Carmel M. Moran
  • , Maurits A. Jansen
  • , Adriana A. S. Tavares
  • , Ross J. Lennen
  • , Carlos Alcaide Corral
  • , Chengjia Wang
  • , Adrian J. W. Thomson
  • , Catherine C. Berry
  • , Humphrey H. P. Yiu

Research output: Contribution to journalArticlepeer-review

Abstract

Aim: To examine the multimodal contrasting ability of gold-dotted magnetic nanoparticles (Au*MNPs) for magnetic resonance (MR), computed tomography (CT) and intravascular ultrasound (IVUS) imaging.

Materials & methods: Au*MNPs were prepared by adapting an impregnation method, without using surface capping reagents and characterized (transmission electron microscopy, x-ray diffraction and Fourier-transform infrared spectroscopy) with their in vitro cytotoxicity assessed, followed by imaging assessments.

Results: The contrast-enhancing ability of Au*MNPs was shown to be concentration-dependent across MR, CT and IVUS imaging. The Au content of the Au*MNP led to evident increases of the IVUS signal.

Conclusion: We demonstrated that Au*MNPs showed concentration-dependent contrast-enhancing ability in MRI and CT imaging, and for the first-time in IVUS imaging due to the Au content. These Au*MNPs are promising toward solidifying tri-modal imaging-based theragnostics.

Original languageEnglish
Pages (from-to)2433-2445
Number of pages13
JournalNanomedicine
Volume15
Issue number25
Early online date11 Sept 2020
DOIs
Publication statusPublished - Oct 2020

Keywords

  • Fe O magnetite nanoparticles
  • Gold deposition
  • MR-CT-IVUS imaging
  • MRI
  • computed tomography
  • multimodal imaging

ASJC Scopus subject areas

  • Bioengineering
  • Medicine (miscellaneous)
  • Biomedical Engineering
  • General Materials Science

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