Magnetocardiography of animals in magnetically shielded environment with active compensation

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

Magnetocardiography of animals in magnetically shielded environment with active compensation

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

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.

Original language	English
Journal	Neurology and Clinical Neurophysiology
Volume	2004
Publication status	Published - 2004

Keywords

Interference device gradiometers
Magnetocardiogram
Magnetometer

ASJC Scopus subject areas

General Neuroscience

Cite this

@article{959f1b2a79224edfa0adc215d2122f9b,

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

year = "2004",

language = "English",

volume = "2004",

journal = "Neurology and Clinical Neurophysiology",

issn = "1526-8748",

publisher = "American Academy of Clinical Neurophysiology",

}

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

AU - Horng, H. E.

AU - Liao, S. H.

AU - Hsu, S. J.

AU - Yang, H. C.

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 and Clinical Neurophysiology

JF - Neurology and Clinical Neurophysiology

ER -

Magnetocardiography of animals in magnetically shielded environment with active compensation

Abstract

Keywords

ASJC Scopus subject areas

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