MPI exploits this behaviour by creating a magnetic field gradient across the imaging space with a field ... “In the brain, the tracer stays in the blood so we get an image of blood volume distribution ...
More information: Adam Erickson et al, Room Temperature Magnetic Skyrmions in Gradient-Composition Engineered CoPt Single Layers, ACS Nano (2024). DOI: 10.1021/acsnano.4c10145 Provided by ...