Tuning of the size of Dy2O3 nanoparticles for optimal performance as an MRI contrast agent.

@article{Norek2008TuningOT,
  title={Tuning of the size of Dy2O3 nanoparticles for optimal performance as an MRI contrast agent.},
  author={Małgorzata Norek and Erik Kampert and Uli Zeitler and Joop A. Peters},
  journal={Journal of the American Chemical Society},
  year={2008},
  volume={130 15},
  pages={
          5335-40
        }
}
The transverse 1H relaxivities of aqueous colloidal solutions of dextran coated Dy2O3 nanoparticles of different sizes were investigated at magnetic field strengths (B) between 7 and 17.6 T. The particle size with the maximum relaxivity (r2) appears to vary between 70 nm at 7 T (r2 approximately = 190 s(-1) mM(-1)) and 60 nm at 17.6 T (r2 approximately = 675 s(-1) mM(-1)). A small difference between r2 and r2* was observed, which was ascribed to the effect of the dextran coating. The value of… CONTINUE READING

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