Title :
A portable magnetocardiography system: Using a magneto-impedance sensor
Author :
Ji Li;Aydin Farajidavar
Author_Institution :
Integrated Medical Systems (IMS) Laboratory at the School of Engineering and Computing Sciences, New York Institute of Technology (NYIT), Old Westbury, NY 11568, USA
Abstract :
A portable magnetocardiography (MCG) system is introduced and validated. The MCG system is based on a commercially available magnetoimpedance (MI) sensor that has nano tesla sensitivity. The output signals from the sensor were digitized at 1 ksps and 16-bit resolution. The signals were displayed on a computer through a custom-made graphical user interface and stored for off-line analysis. The system was validated on a human subject while MCG, electrocardiography and finger pulse oximetry were carried out simultaneously. The results showed a good correlation between the MCG and the other two signals in both time and frequency domain. The system can potentially complement wearable ECG devices in the future, since they do not require any electrode to be in contact with the skin.
Keywords :
"Electrocardiography","Skin","Biomedical monitoring","Amorphous magnetic materials","Electrodes","Magnetic domains","Magnetic fields"
Conference_Titel :
Biomedical Circuits and Systems Conference (BioCAS), 2015 IEEE
DOI :
10.1109/BioCAS.2015.7348422
