Magnetic Nanoparticles for Medical Diagnostics was written to encourage members of the medical profession to join experts from other research fields in exploring the unique physical properties of magnetic nanoparticles for medical applications. It demonstrates the evolution from small groups of scientists fabricating magnetic sensors to multidisciplinary research on wide-ranging medical applications of magnetic nanoparticles, illustrating the regenerative and dynamic nature of this area of research. It covers topics such as magnetic probe and magnetic nanoparticles for sentinel lymph node biopsy, magnetic separation of endosomes, exosomes, mitochondria, autophagosomes using magnetic beads, fluorescent magnetic beads for medical diagnostics, and magnetic hyperthermia using implant type heating mediators.