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Gd2O3 nanoparticles: size-dependent nuclear magnetic resonance.

Contrast media & molecular imaging (2012-10-31)
A T M Anishur Rahman, Peter Majewski, Krasimir Vasilev
ABSTRACT

In this communication, we demonstrate that there is an optimum gadolinium oxide (Gd(2)O(3)) nanoparticle size of 2.3 nm; in the presence of Gd(2)O(3) particles smaller and larger than this critical size, the spin-lattice relaxation rate (T(1) = 1/r(1)) of water protons at 7.0 T drastically decreases. Since r(1) is directly related to the quality of magnetic resonance imaging, the results presented here have significant implications for clinical diagnostics.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Gadolinium(III) oxide, ≥99.9%
Sigma-Aldrich
Gadolinium(III) oxide, powder, ≥99.99% trace metals basis
Sigma-Aldrich
Gadolinium(III) oxide, powder, 99.9% trace metals basis
Sigma-Aldrich
Gadolinium(III) oxide, nanopowder, <100 nm particle size (BET), 99.8% trace metals basis