JOURNAL OF MOLECULAR STRUCTURE, cilt.892, sa.1-3, ss.392-397, 2008 (SCI-Expanded)
In this study, the relaxivities of various ferri-ferro and superparamagnetic particles in human serum and deionized water were determined by using MRI system operating at 1.5 T. For this purpose, the spin-lattice (1/T-1) and spin-spin (1/T-2) relaxation rates in serum and deionized water were measured versus increasing concentrations of the DyPO4, 5Fe(2)O(3)3Gd(2)O(3) + dextran, 5Fe(2)O(3)3Gd(2)O(3) + CMC, 5Fe(2)O(3)3Gd(2)O(3). The longitudinal relaxivity (r(1)) and transverse relaxivity (r(2)) of proton were determined from the slopes of fits between the relaxation rates and concentrations.