Fig. 4From: Facile synthesis of Gd/Ru-doped fluorescent carbon dots for fluorescent/MR bimodal imaging and tumor therapyIn vivo fluorescence and MR imaging (three mice per group). (a) In vivo fluorescence imaging of 4T1 tumor-bearing mice after intravenous injection of Gd/Ru-CDs; (b) FL signal intensities within tumor regions at corresponding time points after intravenous injection of Gd/Ru-CDs; (c) T1-weighted MR imaging of mice model pre- and post-injection of Gd/Ru-CDs at various time intervals; (d) T1-weighted MRI signals of the tumors at determined time points after administration of Gd/Ru-CDsBack to article page