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. 2018 Aug 23;13(8):e0202184. doi: 10.1371/journal.pone.0202184

Fig 1. The SARA device used to non-invasively take MMG measurements of uterine activities.

Fig 1

(a) The 151-channel sensor array, shown with the concave surface cover of the SARA device removed. (b) A simplified illustration of the sensing array and the uterine MMG field. (c) The layout of magnetometers of SQUID sensors (in centimeters). (d) Patient sits and leans against the surface of the array.