In the magnetic particle of the action territory influence giving and/or the method of detecting those, influence giving and/or being

摘要

Giving and/or the method of detecting those, use of the magnetic particle, and the magnetic particle is disclosed influence in the magnetic particle of the action territory. As for the aforementioned method, the step which introduces the magnetic particle into the action territory and, in order for magnetization of step and the magnetic particle which form the selective magnetic field which possesses the spatial pattern of the kind of intensity of magnetic field where the 2nd sub zone where 1st it possesses low intensity of magnetic field has the sub zone and a higher intensity of magnetic field is formed to the action territory to change locally, the signal which depends on the magnetization of the action territory which can produce effect the step which changes the spatial position of two sub zones of the action territory with the drive magnetic field and, with the change of spatial position of the 1st and 2nd sub zone is acquiredStep and, it includes, the magnetic particle has the core territory and the shell territory, the core territory includes the magnetic material, the magnetic material of the core territory relatively high saturation magnetization mainly is offered, as the material of the metal the shell territory includes the metallic oxide material or the precious metal material mainly.