Applying high-Tc superconducting quantum interference devices with a room-temperature pickup coil in the measurement of impedance magnetocardiograms

A. Kandori, A. Tsukamoto, D. Suzuki, K. Ogata, Y. Soutome, T. Miyashita, Y. Seki, K. Yokosawa, K. Tsukada, K. Takagi

Research output: Contribution to journalConference article

11 Citations (Scopus)


A high-TC superconducting quantum interference device (SQUID) magnetometer - in which a room-temperature pickup coil is used to detect an impedance magnetocardiogram (I-MCG) signal - has been developed. The pickup coil (30-mm diameter) is installed outside the cryostat and is connected to the input coil of the high-TC SQUID. The magnetometer's noise level is 150 fT Hz-1/2 (> 10 kHz). The magnetometer was used to measure I-MCG signals (about 12 pT), which were obtained by applying an ac current (15 kHz) of constant amplitude (7 mA, peak-to-peak) to a healthy male subject.

Original languageEnglish
Pages (from-to)393-396
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2 I
Publication statusPublished - Jun 1 2003
Event2002 Applied Superconductivity Conference - Houston, TX, United States
Duration: Aug 4 2002Aug 9 2002



  • High-T SQUID
  • Impedance-magnetocardiogram
  • Magnetocardiogram
  • Magnetometer

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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