Figure 4.

A: Nonlocalized, post‐mortem ¹⁹F spectrum from a male mouse. Experimental data collected in this study demonstrated ISO persistence over 7 h post‐euthanasia. B: Corresponding ¹⁹F spectrum of the femoral region of the right leg of the mouse following injection of ∼2.5 million cells cardiosphere‐derived cells (CDC) with NP labels. The arrow indicates the peak corresponding to the labeled progenitors, distinctly separated from the ISO peaks. ¹H (C) and (D) ¹⁹F images of the ISO peaks were acquired using the butterfly coil. The spatial boundaries of the right hindlimb obtained from the ¹H MRI are overlaid on the ¹⁹F MRI.