Tromsdorf, Ulrich I Size and surface effects on the MRI relaxivity of manganese ferrite nanoparticle contrast agents. [electronic resource] - Nano letters Aug 2007 - 2422-7 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1530-6984 Standard No.: 10.1021/nl071099b doi Subjects--Topical Terms: Contrast Media--chemistryCrystallization--methodsImage Enhancement--methodsMacromolecular Substances--chemistryMagnetic Resonance Imaging--methodsMagneticsManganese Compounds--chemistryMaterials TestingMolecular ConformationNanostructures--chemistryNanotechnology--methodsParticle SizeSurface PropertiesZinc Compounds--chemistry