Functional polymers as metal-free magnetic resonance imaging contrast agents

Magnetic resonance imaging (MRI) is recognized as the most powerful clinical imaging modality due to its ability to generate detailed three-dimensional anatomical images with high spatial resolution in a non-invasive manner without requiring harmful ionizing radiation. Conventionally, exogenous paramagnetic transition metal ion chelates or iron oxide nanoparticles are used as contrast agents (CAs) to enhance the image contrast of anatomical...