Figure 1From: Evaluation of superparamagnetic iron oxide-polymer composite microcapsules for magnetic resonance-guided high-intensity focused ultrasound cancer surgery The characterization of superparamagnetic PLGA-coated Fe 3 O 4 microcapsules. (A, B) Scanning electron microscope images of the PLGA-coated Fe3O4 microcapsules at different magnifications. (C) Transmission electron microscope images of the PLGA-coated Fe3O4 microcapsules. (D) Magnetic properties of the superparamagnetic PLGA-coated Fe3O4 microcapsules (M–H magnetization curve).Back to article page