Figure 6.

XFCT in situ experiment on a sacrificed mouse, where spherical sample holders containing the core–shell NPs, based on Mo, Rh, and Ru, were inserted in the abdominal region (a); the imaging arrangement (b); 3D visualization of reconstructed tomographic data sets demonstrating multiplexed imaging of the different core elements of the NPs (c); XFCT detector spectra recorded for 5 min at the position of the three sample holders showing the Kα XRF peak for the three elements together with the increasing Compton scattering background at higher energies (d).