A Hyperfluorinated Hydrophilic Molecule for Aqueous 19F MRI Contrast Media

Contrast Media Mol Imaging. 2018 Nov 12:2018:1693513. doi: 10.1155/2018/1693513. eCollection 2018.

Abstract

Fluorine-19 (19F) magnetic resonance imaging (MRI) has the potential for a wide range of in vivo applications but is limited by lack of flexibility in exogenous probe formulation. Most 19F MRI probes are composed of perfluorocarbons (PFCs) or perfluoropolyethers (PFPEs) with intrinsic properties which limit formulation options. Hydrophilic organofluorine molecules can provide more flexibility in formulation options. We report herein a hyperfluorinated hydrophilic organoflourine, ET1084, with ∼24 wt. % 19F content. It dissolves in water and aqueous buffers to give solutions with ≥8 M 19F. 19F MRI phantom studies at 9.4T employing a 10-minute multislice multiecho (MSME) scan sequence show a linear increase in signal-to-noise ratio (SNR) with increasing concentrations of the molecule and a detection limit of 5 mM. Preliminary cytotoxicity and genotoxicity assessments suggest it is safe at concentrations of up to 20 mM.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Contrast Media / chemistry*
  • Contrast Media / toxicity
  • Fluorine*
  • Fluorocarbons / chemistry*
  • Fluorocarbons / toxicity
  • Hydrophobic and Hydrophilic Interactions
  • Limit of Detection
  • Magnetic Resonance Imaging / methods*
  • Phantoms, Imaging
  • Signal-To-Noise Ratio
  • Solubility

Substances

  • Contrast Media
  • Fluorocarbons
  • Fluorine