| abstract |
The present invention pertains to an image enhancing agent having a polymeric core including an image-enhancing compound chemically bound thereto and a polymeric shell surrounding the core and compound. The agent may be used for enhancing MRI images, by introducing gadolinium or other appropriate material into the core. Generally, the core is formed from an acid monomer and an esterified monomer. Preferably, a cross-linking monomer is included in the core. |