| abstract |
Provided are: a novel nanoparticle; a contrast agent for magnetic resonance imaging comprising the same; and a zwitterionic ligand compound to be used in the production of the nanoparticle. The contrast agent for MRI according to the present invention is appropriately usable as a contrast agent for MRI in the medical field. The nanoparticle and zwitterionic ligand compound according to the present invention are applicable to various pharmaceutical compositions, etc. including a contrast agent for MRI, and broadly usable in, for example, various diagnostic methods and test reagents in the fields of pharmaceuticals, bioengineering, etc. |