Figure 9.

Closeup of thresholded smoothing spline $I_{f,\infty }$ images. (Left) Image based on backscattered RF obtained from MDA435 tumor implanted mouse (same RF data used in Figs. 2345) immediately after injection of ${\alpha }_v{\beta }_3$-targeted nanoparticles. (Right) Image based on backscattered RF obtained from the same region 60 min after injection, “colorized” so that all pixels in the bottom 44% of the histogram (constructed using the 0-60 min $I_{f,\infty }$ images obtained from this mouse) are red.