Single‐Phase NaDyF4:Tb3+ Nanocrystals as Multifunctional Contrast Agents in High‐Field Magnetic Resonance and Optical Imaging

The current work reports single-phase, terbium-doped sodium dysprosium fluoride (NaDyF4:Tb3+) nanocrystals with green luminescence and good T2 contrast in 7.0-T MRI phantom and animal imaging. The current nanocrystals demonstrate good potential as a dual modal contrast agent for high-field magnetic resonance (MR) and fluorescence imaging.