| abstract |
According to the invention, Mn(II) chelates of hydrophilic chelating agents of formula (I) (wherein each R, which may be the same or different, is a hydrogen atom, a C1-4alkyl group, an optionally hydroxylated C1-4alkoxyalkyl group, or, in a tertiary NR2 group, a hydroxylated C1-4alkyl group) may be used as parenterally administrable magnetic resonance imaging contrast agents for liver imaging. |