A room temperature 19-channel magnetic field mapping device for cardiac signals

Details A room temperature 19-channel magnetic field mapping device for cardiac signals A room temperature 19-channel magnetic field mapping device for cardiac signals

2009-06-26

arxiv.org/abs/0906.4869v2

Physics

Instrumentation and Detectors

3 pages, 3 figures, submitted to Applied Physics Letters

Scientific paper

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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