Magnetocardiography of animals in magnetically shielded environment with active compensation

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

Research output: Contribution to journalArticle

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 languageEnglish
JournalNeurology and Clinical Neurophysiology
Volume2004
Publication statusPublished - 2004 Jan 1

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Magnetocardiography
Noise
Rabbits
Equipment and Supplies

Keywords

  • Interference device gradiometers
  • Magnetocardiogram
  • Magnetometer

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Magnetocardiography of animals in magnetically shielded environment with active compensation. / Horng, Herng-Er; Liao, Shu-Hsien; Hsu, S. J.; Yang, Hong-Chang; Wu, J. Y.; Chen, C. C.; Wu, C. H.; Wu, C. C.

In: Neurology and Clinical Neurophysiology, Vol. 2004, 01.01.2004.

Research output: Contribution to journalArticle

Horng, Herng-Er ; Liao, Shu-Hsien ; Hsu, S. J. ; Yang, Hong-Chang ; Wu, J. Y. ; Chen, C. C. ; Wu, C. H. ; Wu, C. C. / Magnetocardiography of animals in magnetically shielded environment with active compensation. In: Neurology and Clinical Neurophysiology. 2004 ; Vol. 2004.
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AU - Chen, C. C.

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