Low-Tc direct current superconducting quantum interference device magnetometer-based 36-channel magnetocardiography system in a magnetically shielded room

doi:10.1088/1674-1056/24/7/078501

Abstract We constructed a 36-channel magnetocardiography (MCG) system based on low-T_c direct current (DC) superconducting quantum interference device (SQUID) magnetometers operated inside a magnetically shielded room (MSR). Weakly damped SQUID magnetometers with large Steward–McCumber parameter β_c (β_c ≈ 5), which could directly connect to the operational amplifier without any additional feedback circuit, were used to simplify the readout electronics. With a flux-to-voltage transfer coefficient ∂V/∂Ø larger than 420 μV/Ø₀, the SQUID magnetometers had a white noise level of about 5.5 fT·Hz^-1/2 when operated in MSR. 36 sensing magnetometers and 15 reference magnetometers were employed to realize software gradiometer configurations. The coverage area of the 36 sensing magnetometers is 210× 210 mm². MCG measurements with a high signal-to-noise ratio of 40 dB were done successfully using the developed system.

Keywords: superconducting quantum interference devices magnetometer magnetocardiography noise cancellation

Received: 12 January 2015
Revised: 09 February 2015
Accepted manuscript online:

PACS:	85.25.Dq	(Superconducting quantum interference devices (SQUIDs))
	07.55.Ge	(Magnetometers for magnetic field measurements)
	87.85.Pq	(Biomedical imaging)
	43.50.+y	(Noise: its effects and control)

Fund: Project supported by "One Hundred Persons Project" of the Chinese Academy of Sciences and the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (Grant No. XDB04020200).

Corresponding Authors: Kong Xiang-Yan
E-mail: xykong@mail.sim.ac.cn

Cite this article:

Qiu Yang (邱阳), Li Hua (李华), Zhang Shu-Lin (张树林), Wang Yong-Liang (王永良), Kong Xiang-Yan (孔祥燕), Zhang Chao-Xiang (张朝祥), Zhang Yong-Sheng (张永升), Xu Xiao-Feng (徐小峰), Yang Kang (杨康), Xie Xiao-Ming (谢晓明) Low-T_c direct current superconducting quantum interference device magnetometer-based 36-channel magnetocardiography system in a magnetically shielded room 2015 Chin. Phys. B 24 078501

[1]	Morguet A J, Behrens S, Kosch O, Lange C, Zabela M, Selbig D, Munz D L, Schultheiss H P and Koch H 2004 Coronary Artery Dis. 15 155
[2]	Dietmar D 1995 IEEE Trans. Appl. Supercond. 5 2112
[3]	Lee Y H, Yu K K, Kim J M, Kwon H and Kim K 2009 Supercond. Sci. Technol. 22 114003
[4]	Zhang S L, Zhang G F, Wang Y L, Liu M, Li H, Qiu Y, Zeng J, Kong X Y and Xie X M 2013 Chin. Phys. B 22 128501
[5]	Clarke J and Braginski A I 2004 The SQUID Handbook (Vol. II) (Weinheim: Wiley) p. 278
[6]	Forgacs R L and Warnick A 1967 Rev. Sci. Instrum. 38 214
[7]	Drung D, Cantor R, Peters M, Scheer H J and Koch H 1990 Appl. Phys. Lett. 57 406
[8]	Kiviranta M and Seppa H 1995 IEEE Trans. Appl. Supercond. 5 2146
[9]	Xie X M, Zhang Y, Wang H W, Wang Y L, Mück M, Dong H, Krause H J, Braginski A I, Offenhäusser A and Jiang M H 2010 Supercond. Sci. Technol. 23 065016
[10]	Liu C, Zhang Y, Mück M, Krause H J, Braginski A I, Xie X M, Offenhäusser A and Jiang M H 2012 Appl. Phys. Lett. 101 222602
[11]	Kong X Y, Zhang S L, Wang Y L, Zeng J and Xie X M 2012 Phys. Procedia 36 286

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Low-Tc direct current superconducting quantum interference device magnetometer-based 36-channel magnetocardiography system in a magnetically shielded room

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Low-T_c direct current superconducting quantum interference device magnetometer-based 36-channel magnetocardiography system in a magnetically shielded room