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Abstract #1887

Relaxivity of Amorphous Manganese Oxide at Various Field Strengths

Eveliina Lammentausta1, Gamzegul M. Behrouz2, Elli-Noora Salo3, Ville-Veikko Telkki2, Susanna Ahola2, Jessica M. Rosenholm4, Roberto Blanco Sequeiros1, 5, Miika T. Nieminen3, 5

1Department of diagnostic Radiology, Oulu University Hospital, OYS, Oulu, Finland; 2Department of Physics, University of Oulu, Oulu, Finland; 3Department of diagnostic Radiology, Oulu University Hospital, OYS, Finland, Finland; 4Center for Functional Materials, Laboratory of Physical Chemistry, Department of Natural Sciences, bo Akademi University, Turku, Finland; 5Department of Radiology, University of Oulu, Oulu, Finland

Novel amorphous manganese oxide (MnOx) nanostructures were examined in various concentrations from 0.01 mM t0 1 mM at four different field strengths (3T, 4.7T, 7.1T and 9.4T) to determine its T1 relaxivity. MnOx displayed substantially higher relaxivities than typical clinically used gadolinium based contrast agents and thus is a very promising candidate for stem cell labeling and dynamic imaging studies.