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arXiv · 1609.05771

A Portable Diagnostic Device for Cardiac Magnetic Field Mapping

John W. Mooney·Shima Ghasemi-Roudsari·Edward Reade Banham·Chris Symonds·Nick Pawlowski·Benjamin T. H. Varcoe
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Abstract

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 ($104fT/\sqrt{Hz}$ noise floor at 10Hz) and response ($813fT/\mu V$ 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.

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John W. Mooney, Shima Ghasemi-Roudsari, Edward Reade Banham, Chris Symonds, Nick Pawlowski, Benjamin T. H. Varcoe. 2016-09-19. A Portable Diagnostic Device for Cardiac Magnetic Field Mapping. https://arxiv.org/abs/1609.05771

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