2016/09/19 by John W. Mooney, Mooney, John W., Shima Ghasemi-Roudsari +9
Physics and Astronomy · #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Medical Physics (physics.med-ph) #physics.ins-det #physics.med-ph
paper · pdf · doi:10.48550/arxiv.1609.05771
Submitted to IOP BPEX Journal
arxiv created 2016/11/11 · arxiv updated 2016/11/14
In this paper we present a portable magnetocardiography device. The focus of this development was delivering a rapid assessment of chest pain in an emergency department. The aim was therefore to produce an inexpensive device that could be rapidly deployed in a noisy unshielded ward environment. We found that induction coil magnetometers with a coil design optimized for magnetic field mapping possess sufficient sensitivity (104fT/√(Hz) noise floor at 10Hz) and response (813fT/μV at 10Hz) for cycle averaged magnetocardiography and are able to measure depolarisation signals in an unshielded environment. We were unable to observe repolarisation signals to a reasonable fidelity. We present the design of the induction coil sensor array and signal processing routine along with data demonstrating performance in a hospital environment.