A family of magnetic microstructures that should enable similar multiplexing capabilities in the magnetic resonance imaging (MRI) of biological samples have been developed. It is shown that careful control of the geometry of these magnetic particles yields well-defined spectral signatures in the radio-frequency spectrum used for MRI, effectively giving them characteristic 'colours' that can be readily distinguished from one another.
- Gary Zabow
- Stephen Dodd
- Alan Koretsky
