 Dual or multimodal imaging probes have emerged as powerful tools that improve detection sensitivity and accuracy in disease diagnosis by combining two different imaging techniques. These probes combine the advantages of both techniques without the drawbacks of each individual technique. For example, magnetic resonance imaging, MRI, does not use ionizing radiation but has low sensitivity and specificity, while optical fluorescence imaging, OFI, has high sensitivity and specificity but uses ionizing radiation. To address these limitations, researchers have developed dual or multimodal probes that combine the strengths of both techniques. One such approach involves preparing metal-free organic species based on dendrimers with magnetic and fluorescent properties. The dendrimer core is fluorescent on its own, and organic radicals are attached to the surface. By combining these two components, the new dendrimers exhibit both magnetic and fluorescent properties. This is a unique combination of properties that allows for simultaneous detection of diseases through both MRI and OFI. This article was authored by Zambai Zhong, Vega-Lavarez, Youfei Wu, and others. We are article.tv, links in the description below.