A room temperature 19-channel magnetic field mapping device for cardiac signals
G. Bison, N. Castagna, A. Hofer, P. Knowles, J.-L. Schenker, M., Kasprzak, H. Saudan, and A. Weis
TL;DR
This paper introduces a 19-channel magnetic field mapping device for cardiac signals using optical Cs vapor magnetometers, enabling detailed magnetic imaging of the human heart at room temperature.
Contribution
It presents a novel multichannel cardiac magnetic imaging system with 25 sensors and digital feedback, capable of simultaneous heart magnetic field mapping.
Findings
Successful construction of a 19-channel cardiac magnetic field imaging system.
Simultaneous measurement of magnetic fields over the chest.
Use of optical double-resonance Cs vapor magnetometers with feedback loops.
Abstract
We present a multichannel cardiac magnetic field imaging system built in Fribourg from optical double-resonance Cs vapor magnetometers. It consists of 25 individual sensors designed to record magnetic field maps of the beating human heart by simultaneous measurements on a grid of 19 points over the chest. The system is operated as an array of second order gradiometers using sophisticated digitally controlled feedback loops.
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