Biomagnetic signals, mostly due to the electrical activity in the body, are very weak and they can only be detected by the most sensitive magnetometers, such as Superconducting Quantum Interference Devices (SQUIDs). We report here biomagnetic recordings with hybrid sensors based on Giant MagnetoResistance (GMR). We recorded magnetic signatures of the electric activity of the human heart (magnetocardiography) in healthy volunteers. The P-wave and QRS complex, known from the corresponding electric recordings, are clearly visible in the recordings after an averaging time of about 1 min. Multiple recordings at different locations over the chest yielded a dipolar magnetic field map and allowed localizing the underlying current sources. The sensitivity of the GMR-based sensors is now approaching that of SQUIDs and paves way for spin electronics devices for functional imaging of the body.
Skip Nav Destination
Article navigation
11 April 2011
Research Article|
April 14 2011
Magnetocardiography with sensors based on giant magnetoresistance
M. Pannetier-Lecoeur;
1
DSM/IRAMIS/SPEC
, CNRS URA 2464, CEA Saclay, 91191 Gif-sur-Yvette, France
Search for other works by this author on:
L. Parkkonen;
1
DSM/IRAMIS/SPEC
, CNRS URA 2464, CEA Saclay, 91191 Gif-sur-Yvette, France
Search for other works by this author on:
N. Sergeeva-Chollet;
N. Sergeeva-Chollet
1
DSM/IRAMIS/SPEC
, CNRS URA 2464, CEA Saclay, 91191 Gif-sur-Yvette, France
Search for other works by this author on:
H. Polovy;
H. Polovy
1
DSM/IRAMIS/SPEC
, CNRS URA 2464, CEA Saclay, 91191 Gif-sur-Yvette, France
Search for other works by this author on:
C. Fermon;
C. Fermon
1
DSM/IRAMIS/SPEC
, CNRS URA 2464, CEA Saclay, 91191 Gif-sur-Yvette, France
Search for other works by this author on:
C. Fowley
C. Fowley
2CRANN,
Trinity College
, Dublin 2, Ireland
Search for other works by this author on:
a)
Author to whom correspondence should be addressed. Electronic mail: [email protected].
b)
Also at Elekta Oy, Helsinki, Finland.
Appl. Phys. Lett. 98, 153705 (2011)
Article history
Received:
January 19 2011
Accepted:
March 10 2011
Citation
M. Pannetier-Lecoeur, L. Parkkonen, N. Sergeeva-Chollet, H. Polovy, C. Fermon, C. Fowley; Magnetocardiography with sensors based on giant magnetoresistance. Appl. Phys. Lett. 11 April 2011; 98 (15): 153705. https://doi.org/10.1063/1.3575591
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
Roadmap on photonic metasurfaces
Sebastian A. Schulz, Rupert. F. Oulton, et al.
Superconducting flip-chip devices using indium microspheres on Au-passivated Nb or NbN as under-bump metallization layer
Achintya Paradkar, Paul Nicaise, et al.
Related Content
Application of SQUIDs for registration of biomagnetic signals
Low Temp. Phys. (April 2012)
Establishment of 37 channel SQUID system for magnetocardiography
AIP Conference Proceedings (June 2012)
Development of an optically pumped atomic magnetometer using a K-Rb hybrid cell and its application to magnetocardiography
AIP Advances (July 2012)
Performances of compact integrated superconducting magnetometers for biomagnetic imaging
J. Appl. Phys. (October 2008)
Current and Future Technologies for Biomagnetism
AIP Conference Proceedings (September 2004)