Multichannel fetal magnetocardiography using SQUID bootstrap circuit

doi:10.1088/1674-1056/22/12/128501

Abstract Fetal magnetocardiography (MCG) is a sophisticated non-invasive technique for the fetal heart diagnosis. We constructed a multichannel fetal MCG system based on a novel superconducting quantum interference device (SQUID) direct readout scheme called SQUID bootstrap circuit (SBC). The system incorporates four SBC gradiometers for the signal detection and three SBC magnetometers as the references. The fetal MCG signal at a 28-weeks’ gestation was measured. By the fetal MCG signal separation and average, the P-wave and QRS complex can be clearly identified. These results indicate that the SBC is one of the most promising techniques for the fetal MCG recordings.

Keywords: SQUID gradiometer fetal magnetocardiography

Received: 23 May 2013
Revised: 11 July 2013
Accepted manuscript online:

PACS:	85.25.Dq	(Superconducting quantum interference devices (SQUIDs))
	07.55.Ge	(Magnetometers for magnetic field measurements)
	52.70.Ds	(Electric and magnetic measurements)

Fund: Projects supported by the Main Direction Program of Knowledge Innovation of the Chinese Academy of Sciences (Grant No. KGCX2-EW-105), the "100 Talents Project" of the Chinese Academy of Sciences and Strategic Priority Research Program (B) of the Chinese Academy of Sciences (Grant No. XDB04020300).

Corresponding Authors: Zhang Shu-Lin, Kong Xiang-Yan
E-mail: zhangsl@mail.sim.ac.cn;xykong@mail.sim.ac.cn

Cite this article:

Zhang Shu-Lin (张树林), Zhang Guo-Feng (张国峰), Wang Yong-Liang (王永良), Liu Ming (刘明), Li Hua (李华), Qiu Yang (邱阳), Zeng Jia (曾佳), Kong Xiang-Yan (孔祥燕), Xie Xiao-Ming (谢晓明) Multichannel fetal magnetocardiography using SQUID bootstrap circuit 2013 Chin. Phys. B 22 128501

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