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Polyaspartic acid-coated paramagnetic gadolinium oxide nanoparticles as a dual-modal t1 and t2 magnetic resonance imaging contrast agent

  • Shanti Marasini
  • , Huan Yue
  • , Adibehalsadat Ghazanfari
  • , Son Long Ho
  • , Ji Ae Park
  • , Soyeon Kim
  • , Hyunsil Cha
  • , Shuwen Liu
  • , Tirusew Tegafaw
  • , Mohammad Yaseen Ahmad
  • , Abdullah Khamis Ali Al Saidi
  • , Dejun Zhao
  • , Ying Liu
  • , Kwon Seok Chae
  • , Yongmin Chang
  • , Gang Ho Lee
  • Kyungpook National University
  • Korea Institute of Radiological and Medical Sciences

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Surface-coating polymers contribute to nanoparticle-based magnetic resonance imaging (MRI) contrast agents because they can affect the relaxometric properties of the nanoparticles. In this study, polyaspartic acid (PASA)-coated ultrasmall Gd2 O3 nanoparticles with an average particle diameter of 2.0 nm were synthesized using the one-pot polyol method. The synthesized nanoparticles exhibited r1 and r2 of 19.1 and = 53.7 s−1 mM−1, respectively, (r1 and r2 are longitudinal and transverse water–proton spin relaxivities, respectively) at 3.0 T MR field, approximately 5 and 10 times higher than those of commercial Gd-chelate contrast agents, respectively. The T1 and T2 MR images could be obtained due to an appreciable r2 /r1 ratio of 2.80, indicating their potential as a dual-modal T1 and T2 MRI contrast agent.

Original languageEnglish
Article number8222
JournalApplied Sciences (Switzerland)
Volume11
Issue number17
DOIs
StatePublished - Sep 2021

Keywords

  • Gadolinium oxide nanoparticle
  • Magnetic resonance imaging
  • Polyaspartic acid
  • T and T dual-modal imaging

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