Non-Contact Measurement of Cardiac Electromagnetic Field in Mice Using a Microfabricated Atomic Magnetometer

Published

September 30, 2007

Author(s)

B Lindseth, P Schwindt, John E. Kitching, D Fischer, V Shusterman

Abstract

The development of clinical applications of magnetocardiography has been impeded by the large size of the magnetic-field measurement systems. Here we present the first measurements of the cardiac electromagnetic field with an ultra-small (2mm), atomic magnetometer constructed with microfabrication techniques. Measurements were performed in two mice. The magnetometer was placed close to the sternum region, approximately 2 mm away from the surface of the skin. QRS complexes were identifiable in the magnetocardiographic signals in all recordings except for those performed when the animal was moved far away from the sensor (>10 cm). Non-contact recording of cardiac electromagnetic fields with a microfabricated magnetometer is feasible in a shielded environment.

Proceedings Title

Proc., Computers in Cardiology

Conference Dates

September 30-October 3, 2007

Conference Location

Durham, NC

Conference Title

Computers in Cardiology

Pub Type

Conferences

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Keywords

chip-scale magnetometer, CSAM, magnetocardiography, magnetometer, MCG, sensor

Citation

Lindseth, B. , Schwindt, P. , Kitching, J. , Fischer, D. and Shusterman, V. (2007), Non-Contact Measurement of Cardiac Electromagnetic Field in Mice Using a Microfabricated Atomic Magnetometer, Proc., Computers in Cardiology, Durham, NC, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50601 (Accessed October 27, 2025)