Reply to “Prospective advances in fetal biomagnetometry - challenges remain”

Our recent simulation paper on fetal-maternal biomagnetic scanner (FM scanner) (Lew et al., 2017) demonstrated that it should be possible to develop a new type of instrument that can provide the online real-time information useful for advancing prenatal medicine on the electrophysiology of the maternal uterus and fetal heart and brain. Although the authors of the accompanying Letter to the Editor (Popescu and Gustafson, 2018), who have made significant contributions to the field of fetal monitoring, largely agree with this main point, they are not fully convinced that our FM scanner can detect the electrophysiological activity of the fetal brain in real time.

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