Preparation and Characterization of Novel Perfluorooctyl Bromide Nanoparticle as Ultrasound Contrast Agent via Layer-by-Layer Self-Assembly for Folate-Receptor-Mediated Tumor Imaging

Figure 12

In vitro ultrasound imaging of different concentration the targeted nanoparticles, respectively, concentration of 14.20 (a), 7.10 (b), 3.55 (c), and 1.78 (d) nmol/L in distilled water, distilled water as negative control (e), and commercially available contrast agent SonoVue as positive control (f).