US Patent 8060179 Biomagnetic detection and treatment of Alzheimer's Disease

SQUID imaging of a subject's head after the subject having been administered superparamagnetic nanoparticles comprising: an iron-containing core, a coating covering the core and a probe molecule conjugated to the coating wherein the probe molecule locates the superparamagnetic nanoparticle to a target in the brain that is characteristic of the neurodegenerative disease; magnetizing the superparamagnetic nanoparticles using external magnetic coils; and measuring the decaying remanence magnetic fields of the superparamagnetic nanoparticles attached to the target and not from unattached superparamagnetic nanoparticles to obtain magnetic field measurements.