NUCLEAR MAGNETIC RESONANCE IMAGING AGENT

摘要

A nuclear magnetic resonance imaging agent comprises a complex compound composed of (a) dialdehyde-saccharide having a molecular weight of from 500 to 10,000, at least one of constituent monosaccharides of which is oxidation-cleaved, (b) at least one complexing agent that is chemically coupled to an aldehyde group of the dialdehyde-saccharide and (c) a paramagnetic metal ion that is chemically coupled to the complexing agent. The agent has improved performance, included a more desirable retention time in blood.