Journal
PHYSICS IN MEDICINE AND BIOLOGY
Volume 57, Issue 9, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0031-9155/57/9/2619
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Funding
- NIH [5R01HD057965-02]
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We present a portable four-channel atomic magnetometer array operating in the spin-exchange relaxation-free regime. The magnetometer array has several design features intended to maximize its suitability for biomagnetic measurement, specifically foetal magnetocardiography, such as a compact modular design and fibre-coupled lasers. The modular design allows the independent positioning and orientation of each magnetometer. Using this array in a magnetically shielded room, we acquire adult magnetocadiograms. These measurements were taken with a 6-11 fT Hz(-1/2) single-channel baseline sensitivity that is consistent with the independently measured noise level of the magnetically shielded room.
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