A system for generating an image of a measurement subject of a living body or acquiring a conductivity of a measurement subject of a living body, the system comprising: either a first set of a plurality of electrodes and a plurality of sensor cells or a second set of a pair of electrodes and a sensor cell, the system further comprising a base member on which two electrodes of the plurality of electrodes and a sensor cell of the plurality of sensor cells of the first set or the pair of electrodes and the sensor cell of the second set are provided such that the sensor cell is arranged between the two electrodes or between the pair of electrodes; an alternating current input unit configured to input an alternating current of a high frequency in a range from several kHz to 10 MHz to a measurement subject (X, X') of a living body via the two electrodes of the first set or via the pair of electrodes of the second set such that the alternating current flowing between the two electrodes or the pair of electrodes travels through air or the measurement subject (X, X') without directly attaching the electrodes to a body surface of the measurement subject (X, X'); a magnetic field information acquisition unit configured to acquire an intensity of a magnetic field generated on the basis of the alternating current input by the alternating current input unit via the sensor cell arranged at a position separated from the measurement subject (X, X'); and an image generation unit or a conductivity acquisition unit, the image generation unit being configured to generate a tomographic image of the measurement subject (X, X') on the basis of the intensity of the magnetic field acquired by the magnetic field information acquisition unit, the conductivity acquisition unit being configured to acquire a conductivity of the measurement subject (X, X') on the basis of the intensity of the magnetic field acquired by the magnetic field information acquisition unit. either a first set of a plurality of electrodes and a plurality of sensor cells or a second set of a pair of electrodes and a sensor cell, the system further comprising a base member on which two electrodes of the plurality of electrodes and a sensor cell of the plurality of sensor cells of the first set or the pair of electrodes and the sensor cell of the second set are provided such that the sensor cell is arranged between the two electrodes or between the pair of electrodes; an alternating current input unit configured to input an alternating current of a high frequency in a range from several kHz to 10 MHz to a measurement subject (X, X') of a living body via the two electrodes of the first set or via the pair of electrodes of the second set such that the alternating current flowing between the two electrodes or the pair of electrodes travels through air or the measurement subject (X, X') without directly attaching the electrodes to a body surface of the measurement subject (X, X'); a magnetic field information acquisition unit configured to acquire an intensity of a magnetic field generated on the basis of the alternating current input by the alternating current input unit via the sensor cell arranged at a position separated from the measurement subject (X, X'); and an image generation unit or a conductivity acquisition unit, the image generation unit being configured to generate a tomographic image of the measurement subject (X, X') on the basis of the intensity of the magnetic field acquired by the magnetic field information acquisition unit, the conductivity acquisition unit being configured to acquire a conductivity of the measurement subject (X, X') on the basis of the intensity of the magnetic field acquired by the magnetic field information acquisition unit.