High Value of Proton Relaxivity Achieved by Graphene Oxide-Cobalt Ferrite Nanoparticle Composite: A Potential Contrast Agent in Magnetic Resonance Imaging

Venkatesha N, Ashwini R, Pavan Poojar, Sairam Geethanath, Chandan Srivastava

Abstract


This work investigates the potential of graphene oxide-cobaltferrite nanoparticle (GO-CoFe2O4) composite as image contrast enhancing material in Magnetic Resonance Imaging (MRI). In the preset work, GO-CoFe2O4 composites were produced by a two-step synthesis process. In the first step, graphene oxide (GO) was synthesized, and inthe second step CoFe2O4 nano particles were synthesized in a reaction mixture containing GO to yield graphene GO-CoFe2O4 composite. Proton relaxivity value obtained from the composite was 361 mM-1s-1. This valueof proton relaxivity is higher than a majority of reported relaxivity values obtained using several ferrite based contrast agents.

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