Characterization of the Biocompatible Magnetic Colloid on the Basis of 'Fe IND.3' 'O IND.4' Nanoparticles Coated with Dextran, Used as Contrast Agent in Magnetic Resonance Imaging - Gamarra, Lionel Fernel; Alves, S; Amaro, E.; Soga, Diogo; Pontuschka, Walter Maigon; Mamani, J. B; Carneiro, S M; Brito, Giancarlo Espósito de Souza; Figueiredo Neto, Antonio Martins (Journal of Nanoscience and Nanotechnology, 2010)