| 摘要 |
Novel gas filled microspheres useful as magnetic resonance imaging (MRI) contrast agents are provided. The microspheres contain at least one biocompatible lipid selected from the group consisting of dipalmitoylphosphatidylcholine, dipalmitoylphosphatidylethanolamine and dipalmitoylphosphatidic acid and a contrast agent selected from the group of paramagnetic and superparamagnetic agents. |
