Abstract
In this study, hydrophilic and biocompatible chitosan oligosaccharide lactate (COL)-coated ultra-small gadolinium oxide nanoparticles (NPs) were synthesized through a one-pot polyol method and characterized by various experimental techniques. The In Vitro cellular cytotoxicity assay indicated that the COL-coated gadolinium oxide NPs were non-toxic up to 500 μM Gd. In addition, their water proton spin relaxivities (i.e., r1 and r₂) were estimated to be 13.0 and 27.0 s-1mM-1, respectively, which are higher than those of commercial magnetic resonance imaging (MRI) contrast agents. The application potential of the solution sample as a T1 MRI contrast agent was demonstrated In Vitro by measuring map images in which dose-dependent contrast enhancements were observed.
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