High-Tc SQUID gradiometer system for magnetocardiography in an unshielded environment

S. H. Liao; S. C. Hsu; C. C. Lin; H. E. Horng; J. C. Chen; M. J. Chen; C. H. Wu; H. C. Yang

doi:10.1088/0953-2048/16/12/023

High-T_c SQUID gradiometer system for magnetocardiography in an unshielded environment

S. H. Liao^*, S. C. Hsu, C. C. Lin, H. E. Horng, J. C. Chen, M. J. Chen, C. H. Wu, H. C. Yang

^*此作品的通信作者

研究成果: 雜誌貢獻 › 會議論文 › 同行評審

25 引文斯高帕斯（Scopus）

摘要

We set up an electronic gradiometer for magnetocardiography (MCG) in an unshielded environment. The electronically balanced gradiometer consists of high-temperature radio-frequency superconducting quantum interference device (rf SQUID) magnetometers. The rf SQUID magnetometers are arranged to form the electronic first-order, four-vector gradiometer, or second-order gradiometer. The output of the MCG signal was filtered by a band pass (1-30 Hz) and power line filters. We can reduce the noise to ∼1 pT Hz^-1/2 at 1 Hz for second-order or four-vector gradiometers. Two-dimensional MCG imaging is demonstrated. The results are discussed with data measured in the moderate magnetically shielded environment.

原文	英語
頁（從 - 到）	1426-1429
頁數	4
期刊	Superconductor Science and Technology
卷	16
發行號	12
DOIs	https://doi.org/10.1088/0953-2048/16/12/023
出版狀態	已發佈 - 2003 12月
事件	ISEC 2003, International Superconducting Electronics Conference - Sydney,NSW, 澳大利亚持續時間: 2003 7月 7 → 2003 7月 11

ASJC Scopus subject areas

陶瓷和複合材料
凝聚態物理學
金屬和合金
電氣與電子工程
材料化學

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title = "High-Tc SQUID gradiometer system for magnetocardiography in an unshielded environment",

abstract = "We set up an electronic gradiometer for magnetocardiography (MCG) in an unshielded environment. The electronically balanced gradiometer consists of high-temperature radio-frequency superconducting quantum interference device (rf SQUID) magnetometers. The rf SQUID magnetometers are arranged to form the electronic first-order, four-vector gradiometer, or second-order gradiometer. The output of the MCG signal was filtered by a band pass (1-30 Hz) and power line filters. We can reduce the noise to ∼1 pT Hz-1/2 at 1 Hz for second-order or four-vector gradiometers. Two-dimensional MCG imaging is demonstrated. The results are discussed with data measured in the moderate magnetically shielded environment.",

author = "Liao, {S. H.} and Hsu, {S. C.} and Lin, {C. C.} and Horng, {H. E.} and Chen, {J. C.} and Chen, {M. J.} and Wu, {C. H.} and Yang, {H. C.}",

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doi = "10.1088/0953-2048/16/12/023",

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note = "ISEC 2003, International Superconducting Electronics Conference ; Conference date: 07-07-2003 Through 11-07-2003",

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TY - JOUR

T1 - High-Tc SQUID gradiometer system for magnetocardiography in an unshielded environment

AU - Liao, S. H.

AU - Hsu, S. C.

AU - Lin, C. C.

AU - Horng, H. E.

AU - Chen, J. C.

AU - Chen, M. J.

AU - Wu, C. H.

AU - Yang, H. C.

PY - 2003/12

Y1 - 2003/12

N2 - We set up an electronic gradiometer for magnetocardiography (MCG) in an unshielded environment. The electronically balanced gradiometer consists of high-temperature radio-frequency superconducting quantum interference device (rf SQUID) magnetometers. The rf SQUID magnetometers are arranged to form the electronic first-order, four-vector gradiometer, or second-order gradiometer. The output of the MCG signal was filtered by a band pass (1-30 Hz) and power line filters. We can reduce the noise to ∼1 pT Hz-1/2 at 1 Hz for second-order or four-vector gradiometers. Two-dimensional MCG imaging is demonstrated. The results are discussed with data measured in the moderate magnetically shielded environment.

AB - We set up an electronic gradiometer for magnetocardiography (MCG) in an unshielded environment. The electronically balanced gradiometer consists of high-temperature radio-frequency superconducting quantum interference device (rf SQUID) magnetometers. The rf SQUID magnetometers are arranged to form the electronic first-order, four-vector gradiometer, or second-order gradiometer. The output of the MCG signal was filtered by a band pass (1-30 Hz) and power line filters. We can reduce the noise to ∼1 pT Hz-1/2 at 1 Hz for second-order or four-vector gradiometers. Two-dimensional MCG imaging is demonstrated. The results are discussed with data measured in the moderate magnetically shielded environment.

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SN - 0953-2048

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JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

IS - 12

T2 - ISEC 2003, International Superconducting Electronics Conference

Y2 - 7 July 2003 through 11 July 2003

ER -

High-Tc SQUID gradiometer system for magnetocardiography in an unshielded environment

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ASJC Scopus subject areas

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High-T_c SQUID gradiometer system for magnetocardiography in an unshielded environment