A Mobile and Space-Saving High-Temperature Superconducting Multichannel Magnetocardiograph in a Vertical Magnetically Shielded Cylinder

Daisuke Suzuki, Akira Tsukamoto, Koichi Yokosawa, Akihiko Kandori, Kuniomi Ogata, Keiji Tsukada

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

A high-temperature superconducting (HTS) magnetocardiographic system composed of 16-channels HTS-Superconducting Quantum Interference Device (SQUID) magnetometers and a vertical magnetically shielded cylinder has been developed. The cylinder is designed to save space and provide mobility for the entire system, including the magnetically shielded cylinder. It consists of two fixed semicircular shells and a sliding semicircular door, all of which are made from sheets of a flexible nanocrystalline soft-magnetic material. The cardiomagnetic field from a subject seated in the vertical magnetically shielded cylinder is measured by multichannel HTS-SQUID magnetometers that are sensitive to field strengths weaker than 100fT/(Hz)1/2. The high signal-to-noise ratio of the magnetometer signals makes beat-to-beat measurement of the cardiomagnetic field possible. This HTS-based multichannel MCG system is being applied to medical applications such as the detection of arrhythmias and ischemic heart disease.

Original languageEnglish
Pages (from-to)117-120
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume43
Issue number1
DOIs
Publication statusPublished - Jan 2004
Externally publishedYes

Keywords

  • Cardiac disease
  • Environmental noise
  • MCG
  • Magnetically shield
  • SQUID

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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