Magnetic particle imaging of particle dynamics in complex matrix systems

Abstract Magnetic particle imaging (MPI) is a young modality for biomedical applications. It uses magnetic nanoparticles as tracer material to produce three-dimensional images of the spatial distribution in field-of-view. Since magnetization dynamics are tied hydrodynamic mobility via Brownian relaxation mechanism, MPI also capable mapping local environment during process. influence viscosity or temperature on harmonic spectrum very complicated, we used spectroscopy (MPS) an integral measurement technique investigate relationships. We studied MPS spectra function both and model systems. With multispectral MPS, developed empirical tool treating more complex scenarios calibration approach. demonstrate that MPS/MPI powerful methods studying particle-matrix interactions media.