A 16-channel high-Tc SQUID-magnetometer system for magnetocardiogram mapping

Koichi Yokosawa, Akira Tsukamoto, Daisuke Suzuki, Akihiko Kandori, Tsuyoshi Miyashita, Kuniomi Ogata, Yusuke Seki, Keiji Tsukada

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A compact, light and easy-to-handle magnetocardiograph (MCG) has been developed. The MCG consists of a sensor array with superconducting-quantum-interference-device magnetometers made of a high-critical temperature superconductor, arranged in a 4 × 4 matrix, and operated in a vertical magnetically shielding cylinder (1.7 m high and 1 m in diameter). Each magnetometer is paired with each of its adjacent magnetometers, and the difference between the respective outputs provides us with a measure of magnetic gradient. This configuration for the electronic gradiometers cancels out the environmental magnetic field noise within the shielding cylinder. We use the data from the multiple gradiometers to construct a current arrow map that describes the distribution of original current vectors in the area being measured. We used the fabricated MCG to record magnetocardiograms of healthy volunteers. The smallest signals, i.e., the P-waves, were clearly detected without averaging. The current arrow maps obtained from the single-beat magnetocardiograms indicate the feasibility of clinical application of this MCG.

Original languageEnglish
Pages (from-to)1383-1386
Number of pages4
JournalSuperconductor Science and Technology
Volume16
Issue number12
DOIs
Publication statusPublished - Dec 2003
Externally publishedYes

Fingerprint

SQUIDs
Magnetometers
magnetometers
gradiometers
Shielding
shielding
vector currents
Sensor arrays
P waves
Superconducting materials
synchronism
critical temperature
Magnetic fields
interference
gradients
output
sensors
matrices
configurations
electronics

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

A 16-channel high-Tc SQUID-magnetometer system for magnetocardiogram mapping. / Yokosawa, Koichi; Tsukamoto, Akira; Suzuki, Daisuke; Kandori, Akihiko; Miyashita, Tsuyoshi; Ogata, Kuniomi; Seki, Yusuke; Tsukada, Keiji.

In: Superconductor Science and Technology, Vol. 16, No. 12, 12.2003, p. 1383-1386.

Research output: Contribution to journalArticle

Yokosawa, K, Tsukamoto, A, Suzuki, D, Kandori, A, Miyashita, T, Ogata, K, Seki, Y & Tsukada, K 2003, 'A 16-channel high-Tc SQUID-magnetometer system for magnetocardiogram mapping', Superconductor Science and Technology, vol. 16, no. 12, pp. 1383-1386. https://doi.org/10.1088/0953-2048/16/12/013
Yokosawa K, Tsukamoto A, Suzuki D, Kandori A, Miyashita T, Ogata K et al. A 16-channel high-Tc SQUID-magnetometer system for magnetocardiogram mapping. Superconductor Science and Technology. 2003 Dec;16(12):1383-1386. https://doi.org/10.1088/0953-2048/16/12/013
Yokosawa, Koichi ; Tsukamoto, Akira ; Suzuki, Daisuke ; Kandori, Akihiko ; Miyashita, Tsuyoshi ; Ogata, Kuniomi ; Seki, Yusuke ; Tsukada, Keiji. / A 16-channel high-Tc SQUID-magnetometer system for magnetocardiogram mapping. In: Superconductor Science and Technology. 2003 ; Vol. 16, No. 12. pp. 1383-1386.
@article{df03f1b367ba4a889a5208a740acbf34,
title = "A 16-channel high-Tc SQUID-magnetometer system for magnetocardiogram mapping",
abstract = "A compact, light and easy-to-handle magnetocardiograph (MCG) has been developed. The MCG consists of a sensor array with superconducting-quantum-interference-device magnetometers made of a high-critical temperature superconductor, arranged in a 4 × 4 matrix, and operated in a vertical magnetically shielding cylinder (1.7 m high and 1 m in diameter). Each magnetometer is paired with each of its adjacent magnetometers, and the difference between the respective outputs provides us with a measure of magnetic gradient. This configuration for the electronic gradiometers cancels out the environmental magnetic field noise within the shielding cylinder. We use the data from the multiple gradiometers to construct a current arrow map that describes the distribution of original current vectors in the area being measured. We used the fabricated MCG to record magnetocardiograms of healthy volunteers. The smallest signals, i.e., the P-waves, were clearly detected without averaging. The current arrow maps obtained from the single-beat magnetocardiograms indicate the feasibility of clinical application of this MCG.",
author = "Koichi Yokosawa and Akira Tsukamoto and Daisuke Suzuki and Akihiko Kandori and Tsuyoshi Miyashita and Kuniomi Ogata and Yusuke Seki and Keiji Tsukada",
year = "2003",
month = "12",
doi = "10.1088/0953-2048/16/12/013",
language = "English",
volume = "16",
pages = "1383--1386",
journal = "Superconductor Science and Technology",
issn = "0953-2048",
publisher = "IOP Publishing Ltd.",
number = "12",

}

TY - JOUR

T1 - A 16-channel high-Tc SQUID-magnetometer system for magnetocardiogram mapping

AU - Yokosawa, Koichi

AU - Tsukamoto, Akira

AU - Suzuki, Daisuke

AU - Kandori, Akihiko

AU - Miyashita, Tsuyoshi

AU - Ogata, Kuniomi

AU - Seki, Yusuke

AU - Tsukada, Keiji

PY - 2003/12

Y1 - 2003/12

N2 - A compact, light and easy-to-handle magnetocardiograph (MCG) has been developed. The MCG consists of a sensor array with superconducting-quantum-interference-device magnetometers made of a high-critical temperature superconductor, arranged in a 4 × 4 matrix, and operated in a vertical magnetically shielding cylinder (1.7 m high and 1 m in diameter). Each magnetometer is paired with each of its adjacent magnetometers, and the difference between the respective outputs provides us with a measure of magnetic gradient. This configuration for the electronic gradiometers cancels out the environmental magnetic field noise within the shielding cylinder. We use the data from the multiple gradiometers to construct a current arrow map that describes the distribution of original current vectors in the area being measured. We used the fabricated MCG to record magnetocardiograms of healthy volunteers. The smallest signals, i.e., the P-waves, were clearly detected without averaging. The current arrow maps obtained from the single-beat magnetocardiograms indicate the feasibility of clinical application of this MCG.

AB - A compact, light and easy-to-handle magnetocardiograph (MCG) has been developed. The MCG consists of a sensor array with superconducting-quantum-interference-device magnetometers made of a high-critical temperature superconductor, arranged in a 4 × 4 matrix, and operated in a vertical magnetically shielding cylinder (1.7 m high and 1 m in diameter). Each magnetometer is paired with each of its adjacent magnetometers, and the difference between the respective outputs provides us with a measure of magnetic gradient. This configuration for the electronic gradiometers cancels out the environmental magnetic field noise within the shielding cylinder. We use the data from the multiple gradiometers to construct a current arrow map that describes the distribution of original current vectors in the area being measured. We used the fabricated MCG to record magnetocardiograms of healthy volunteers. The smallest signals, i.e., the P-waves, were clearly detected without averaging. The current arrow maps obtained from the single-beat magnetocardiograms indicate the feasibility of clinical application of this MCG.

UR - http://www.scopus.com/inward/record.url?scp=0348233860&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0348233860&partnerID=8YFLogxK

U2 - 10.1088/0953-2048/16/12/013

DO - 10.1088/0953-2048/16/12/013

M3 - Article

AN - SCOPUS:0348233860

VL - 16

SP - 1383

EP - 1386

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

SN - 0953-2048

IS - 12

ER -