Preliminary characterization of a laminated iron-core 6.3 T/m FFL magnet

Magnetic particle imaging (MPI) is a noninvasive imaging method that detects superparamagnetic iron oxide (SPIO) nanoparticles within the body by their nonlinear behavior in the presence of external magnetic selection field [1]. A “selection field” is used to scan the body for the nonlinear signature of particles; essentially the particles outside of the instantaneous location of the field free region are saturated and hence induce no signal in our receiver coil.