Superparamagnetic Bifunctional Bisphosphonates Nanoparticles: A Potential MRI Contrast Agent for Osteoporosis Therapy and Diagnostic

Figure 3

(a) T1 weight MR images and $\text{T}{2}^{*}$ weight MR images of aqueous solutions of as-synthesized nanoparticles at different Fe concentrations; (b) T1 and $\text{T}{2}^{*}$ relaxation rates (1/T1, 1/$\text{T}{2}^{*}$) plotted against the Fe concentration for the various aqueous solutions.

(a)

(b)