Optimal Labeling Dose, Labeling Time, and Magnetic Resonance Imaging Detection Limits of Ultrasmall Superparamagnetic Iron-Oxide Nanoparticle Labeled Mesenchymal Stromal Cells
Phantoms intensity differences after 21-hour USPIO incubation. MRI intensity differences are the mean numeric difference between absolute MRI intensities of phantoms and reference gels. USPIO = ultrasmall superparamagnetic iron-oxide. USPIO dose: full = 10 μg per 105 cells; half = 5 μg per 105 cells.