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2013•Chinese Science BulletinOpen access

A novel superconducting quantum interference device for biomagnetic measurements

Shulin Zhang, Guofeng Zhang, Yongliang Wang, Jia Zeng, Yang Qiu, Ming Liu, Xiangyan Kong, Xiaoming Xie

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Abstract

Superconducting Quantum Interference Device (SQUID) can provide an ultrahigh magnetic sensitivity for the biomagnetic measurements. In this paper, a SQUID bootstrap circuit (SBC) gradiometer was designed and fabricated. Using the SBC gradiometer, magnetocardiography (MCG), fetal MCG and magnetoencephalography (MEG) signals were detected in a magnetically shielded room.

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What this paper is about

Superconducting Quantum Interference Device (SQUID) can provide an ultrahigh magnetic sensitivity for the biomagnetic measurements. In this paper, a SQUID bootstrap circuit (SBC) gradiometer was designed and fabricated. Using the SBC gradiometer, magnetocardiography (MCG), fetal MCG and magnetoencephalography (MEG) signals were detected in a magnetically shielded room.

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Available abstract

Superconducting Quantum Interference Device (SQUID) can provide an ultrahigh magnetic sensitivity for the biomagnetic measurements. In this paper, a SQUID bootstrap circuit (SBC) gradiometer was designed and fabricated. Using the SBC gradiometer, magnetocardiography (MCG), fetal MCG and magnetoencephalography (MEG) signals were detected in a magnetically shielded room.

Key concepts: Gradiometer, Magnetocardiography, Squid, Shielded cable, Sensitivity (control systems), Magnetoencephalography, Superconductivity, Interference (communication)

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