Towards highly efficient,intelligent and bimodal imaging probes: Novel approaches provided by lanthanide coordination chemistry |
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Authors: | Célia S Bonnet Éva Tóth |
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Institution: | Centre de biophysique moléculaire, CNRS, rue Charles-Sadron, 45071 Orléans, France |
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Abstract: | Gd3+ complexes are widely used as contrast enhancing agents in medical magnetic resonance imaging (MRI). In recent years, new fields have emerged in their development. The general tendency of using higher magnetic fields in biomedical and clinical MRI for a better signal to noise ratio calls for new contrast agents specifically optimized for such high field applications. Molecular imaging, aiming at the non-invasive visualisation of expression and function of bioactive molecules, requires imaging probes that provide a specific magnetic response to a particular molecular event. Finally, bimodal imaging may allow for combining the excellent resolution of MRI with a good sensitivity of other imaging modalities, such as optical methods. It requires bimodal imaging probes that satisfy requirements for both modalities within a single molecule. Here we review our latest efforts to develop novel lanthanide-based contrast agents in these specific fields and demonstrate the possibilities offered by lanthanide coordination chemistry. |
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