FIGURE 4.

(a) Illustration of bioresponsive and fluorescent hyaluronic acid‐iodixanol NGs for targeted X‐ray CT imaging and chemotherapy of breast tumors. (b) Axial CT images and the corresponding HU value of MCF‐7 tumor‐bearing mice at 0, 7, 9, and 11 h following tail vein injection of HAI‐NGs at a concentration of 15 mg/ml (60 mg iodine equiv./kg). Circled areas indicate the position of the tumor. Reprinted with permission from Zhu et al. (2016). Copyright 2016. Elsevier