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Analysis of MCG measured by high-Tc SQUID with spatial filter method

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4 Author(s)
Sai, K.Y. ; Dept. of Electron. Eng., Tokyo Denki Univ., Japan ; Zhen, Y.Q. ; Uchikawa, Y. ; Kotani, M.

Magnetocardiogram (MCG) measurement using high-Tc SQUID magnetometer is receiving attention as a diagnostic technique because the instrument is easy to operate and the liquid nitrogen coolant is lower cost compared with the liquid helium used in conventional SQUID magnetometers. We measured of the linear current and MCG of the subjects with healthy and unhealthy hearts using a 16-channel high-Tc SQUID in a prefabricated magnetically shielded room. The spatial filter method (SFM) is used to reduce the errors in the measurement and analyzes of the signal source. The results of the simulation and actual measurement of the subjects with healthy and unhealthy hearts show that the method is useful for the estimation of the signal source

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Magnetics, IEEE Transactions on  (Volume:36 ,  Issue: 5 )