Patent ID: 6961605

Claim:
A method of processing measured data of a magnetic field generated by a patient and displaying a magnetic field diagram or map by adjusting a bias current and an offset voltage Voff of each of a plurality of SQUID channels arranged in rows and columns, comprising the steps of: selecting a value of the bias current at which amplitude ΔV of a φ-v characteristic curve becomes maximum when the bias current is changed for each SQUID channel where V is a voltage corresponding to an external magnetic field when the external magnetic field is applied to each SQUID channel and φ is magnetic flux which expresses the external magnetic field; obtaining a maximum value Vmax and a minimum value Vmin of the voltage by changing the external magnetic field applied to each SQUID channel and finding a value of the offset voltage by calculating the equation V off=( V max+ V min)/2 for each SQUID channel; and displaying φ-V characteristic curves for all of the SQUID channels.