Magnetocardiography measurements with $^4$He vector optically pumped magnetometers at room temperature

Abstract : In this paper, we present a proof of concept study which demonstrates for the first time the possibility to record magnetocardiography (MCG) signals with $^4$He vector optically-pumped magnetometers (OPM) operated in a gradiometer mode. Resulting from a compromise between sensitivity, size and operability in a clinical environment, the developed magnetometers are based on the parametric resonance of helium in zero magnetic field. Sensors are operated at room-temperature and provide a tri-axis vector measurement of the magnetic field. Measured sensitivity is around 210 fT/√Hz in the bandwidth [2 Hz; 300 Hz]. MCG signals from a phantom and two healthy subjects are successfully recorded. Human MCG data obtained with the OPMs are compared to reference electrocardiogram (ECG) recordings: similar heart rates, shapes of the main patterns of the cardiac cycle (P/T waves, QRS complex) and QRS widths are obtained with both techniques.
Type de document :
Article dans une revue
Liste complète des métadonnées

https://hal-cea.archives-ouvertes.fr/cea-01560997
Contributeur : Etienne Labyt <>
Soumis le : mercredi 12 juillet 2017 - 11:29:28
Dernière modification le : lundi 24 septembre 2018 - 10:56:04
Document(s) archivé(s) le : mercredi 24 janvier 2018 - 21:33:30

Fichier

MCG_He4magnetometer_2017_Phys....
Publication financée par une institution

Identifiants

Collections

CEA | DRT | UGA | LETI

Citation

S. Morales, M.C. Corsi, W. Fourcault, F. Bertrand, G. Cauffet, et al.. Magnetocardiography measurements with $^4$He vector optically pumped magnetometers at room temperature . Physics in Medicine and Biology, IOP Publishing, 2017, 〈http://iopscience.iop.org/article/10.1088/1361-6560/aa6459〉. 〈10.1088/1361-6560/aa6459〉. 〈cea-01560997〉

Partager

Métriques

Consultations de la notice

155

Téléchargements de fichiers

158