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JOURNAL ARTICLE
RESEARCH SUPPORT, N.I.H., EXTRAMURAL
The effects of particle shape and size on T2 relaxation in magnetic resonance imaging.
Journal of Biomedical Nanotechnology 2014 November
Superparamagnetic iron oxide nanoparticles have recently been developed as T2 contrast agents for magnetic resonance imaging. Here we report the dependence of the phase relaxivity, r2, on the particle shape. We show that the size dependence of the relaxivity for spherical particles can be generalized to spheroidal particles. In addition, we show that the saturation of relaxivity above a certain size observed in spherical particles does not occur in the spheroidal particles investigated.
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