Magnetic particle imaging device

A magnetic particle imaging device to image a distribution of a magnetic particle in an inspection object, the magnetic particle imaging device comprising:

• a static magnetic field generator to generate a non-magnetic field region;
• an alternating current (AC) magnetic field application instrument to apply an AC magnetic field to the non-magnetic field region;
• and
• a magnetization distribution measuring instrument to measure a harmonic signal emitted from a magnetic particle in the non-magnetic field region,
• wherein the magnetization distribution measuring instrument includes:
• a detection coil having an axis parallel to a direction of the AC magnetic field in order to detect a magnetization signal;
• a measuring instrument connected to the detection coil;
• and
• a resonance frequency variable device including a capacitor connected in parallel to the detection coil in order to adjust a resonance frequency of the detection coil and the measuring instrument, and
• a capacity of the capacitor is adjusted such that a resonance frequency of a closed circuit including the detection coil, the measuring instrument, and the resonance frequency variable device coincides with a frequency of the harmonic signal,
• the measuring instrument includes:
• a transfer coil to be energized with a current based on a magnetic signal generated from the inspection object, and to excite a magnetic field based on an energizing current;
• and
• a magnetic measuring instrument to measure a magnetic field excited by the transfer coil, and
• the closed circuit includes the detection coil, the transfer coil, and the resonance frequency variable device.