Magnetocardiography of animals in magnetically shielded environment with active compensation

Herng-Er Horng; S. H. Liao; S. J. Hsu; Hong-Chang Yang; J. Y. Wu; C. C. Chen; C. H. Wu; C. C. Wu

Magnetocardiography of animals in magnetically shielded environment with active compensation

Herng-Er Horng^*, S. H. Liao, S. J. Hsu, Hong-Chang Yang, J. Y. Wu, C. C. Chen, C. H. Wu, C. C. Wu

^*此作品的通信作者

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

1 引文斯高帕斯（Scopus）

摘要

A high-T_c 1st-order electronic superconducting quantum interference device (SQUID) gradiometer system is constructed to study the magnetocardiogram (MCG) of rabbits in a moderately magnetically shielded environment with active compensation. In the noisy hospital environment, the noise cannot be completely reduced with the 1st-order gradiometer, therefore, a reference SQUID with active compensation was used to further reduce the noise level leaking into the room. The MCG system was equipped with a x-y translation bed. We used a low-pass filter with the cut off frequency at 44 Hz, a high-pass filter with the cut off frequency at 0.1 Hz and the 60 Hz notch filter to reduce the power line interference. The noise level of the 1st order gradiometer MCG system in this moderately magnetically shielded room was about 1 pT/Hz^1/2 at 1 Hz. The MCG of a normal rabbits was measured with this system and a MCG contour map and a current density distribution was constructed.

原文	英語
期刊	Neurology and Clinical Neurophysiology
卷	2004
出版狀態	已發佈 - 2004

ASJC Scopus subject areas

神經科學 (全部)

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title = "Magnetocardiography of animals in magnetically shielded environment with active compensation",

abstract = "A high-Tc 1st-order electronic superconducting quantum interference device (SQUID) gradiometer system is constructed to study the magnetocardiogram (MCG) of rabbits in a moderately magnetically shielded environment with active compensation. In the noisy hospital environment, the noise cannot be completely reduced with the 1st-order gradiometer, therefore, a reference SQUID with active compensation was used to further reduce the noise level leaking into the room. The MCG system was equipped with a x-y translation bed. We used a low-pass filter with the cut off frequency at 44 Hz, a high-pass filter with the cut off frequency at 0.1 Hz and the 60 Hz notch filter to reduce the power line interference. The noise level of the 1st order gradiometer MCG system in this moderately magnetically shielded room was about 1 pT/Hz1/2 at 1 Hz. The MCG of a normal rabbits was measured with this system and a MCG contour map and a current density distribution was constructed.",

keywords = "Interference device gradiometers, Magnetocardiogram, Magnetometer",

author = "Herng-Er Horng and Liao, {S. H.} and Hsu, {S. J.} and Hong-Chang Yang and Wu, {J. Y.} and Chen, {C. C.} and Wu, {C. H.} and Wu, {C. C.}",

year = "2004",

language = "English",

volume = "2004",

journal = "Neurology & clinical neurophysiology [electronic resource] : NCN.",

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publisher = "American Academy of Clinical Neurophysiology",

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T1 - Magnetocardiography of animals in magnetically shielded environment with active compensation

AU - Horng, Herng-Er

AU - Liao, S. H.

AU - Hsu, S. J.

AU - Yang, Hong-Chang

AU - Wu, J. Y.

AU - Chen, C. C.

AU - Wu, C. H.

AU - Wu, C. C.

PY - 2004

Y1 - 2004

N2 - A high-Tc 1st-order electronic superconducting quantum interference device (SQUID) gradiometer system is constructed to study the magnetocardiogram (MCG) of rabbits in a moderately magnetically shielded environment with active compensation. In the noisy hospital environment, the noise cannot be completely reduced with the 1st-order gradiometer, therefore, a reference SQUID with active compensation was used to further reduce the noise level leaking into the room. The MCG system was equipped with a x-y translation bed. We used a low-pass filter with the cut off frequency at 44 Hz, a high-pass filter with the cut off frequency at 0.1 Hz and the 60 Hz notch filter to reduce the power line interference. The noise level of the 1st order gradiometer MCG system in this moderately magnetically shielded room was about 1 pT/Hz1/2 at 1 Hz. The MCG of a normal rabbits was measured with this system and a MCG contour map and a current density distribution was constructed.

AB - A high-Tc 1st-order electronic superconducting quantum interference device (SQUID) gradiometer system is constructed to study the magnetocardiogram (MCG) of rabbits in a moderately magnetically shielded environment with active compensation. In the noisy hospital environment, the noise cannot be completely reduced with the 1st-order gradiometer, therefore, a reference SQUID with active compensation was used to further reduce the noise level leaking into the room. The MCG system was equipped with a x-y translation bed. We used a low-pass filter with the cut off frequency at 44 Hz, a high-pass filter with the cut off frequency at 0.1 Hz and the 60 Hz notch filter to reduce the power line interference. The noise level of the 1st order gradiometer MCG system in this moderately magnetically shielded room was about 1 pT/Hz1/2 at 1 Hz. The MCG of a normal rabbits was measured with this system and a MCG contour map and a current density distribution was constructed.

KW - Interference device gradiometers

KW - Magnetocardiogram

KW - Magnetometer

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M3 - Article

C2 - 16012642

AN - SCOPUS:29144520860

SN - 1526-8748

VL - 2004

JO - Neurology & clinical neurophysiology [electronic resource] : NCN.

JF - Neurology & clinical neurophysiology [electronic resource] : NCN.

ER -

Magnetocardiography of animals in magnetically shielded environment with active compensation

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