Localization of biological sources with arrays of superconducting gradiometers

摘要

It is shown that a planar array of superconducting gradiometers with integrated dc SQUID’s fabricated with a lithographic technique is suitable in the study of biomagnetic fields. The comparisons were made between this kind of array and one made of traditional second‐order gradiometers. These comparisons were made solving the inverse problem with both arrays. The localization procedure is described in the paper, considering also the effect of noise. The magnetic field generator was simulated using the simple current dipole model. Arrays of planar integrated gradiometers should permit the construction of multichannel systems for real time localization of the sources responsible for biomagnetic signals.