Bio-magnetic signatures of fetal breathing movement


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ULUŞAR Ü. D., Wilson J. D., Murphy P., Govindan R. B., Preissl H., Lowery C. L., ...Daha Fazla

PHYSIOLOGICAL MEASUREMENT, cilt.32, sa.2, ss.263-273, 2011 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 32 Sayı: 2
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1088/0967-3334/32/2/009
  • Dergi Adı: PHYSIOLOGICAL MEASUREMENT
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.263-273
  • Anahtar Kelimeler: fetal breathing movement, bio-magnetic signal, fetal magnetoencephalography, ultrasound, MAGNETOENCEPHALOGRAPHY
  • Akdeniz Üniversitesi Adresli: Evet

Özet

The purpose of fetal magnetoencephalography (fMEG) is to record and analyze fetal brain activity. Unavoidably, these recordings consist of a complex mixture of bio-magnetic signals from both mother and fetus. The acquired data include biological signals that are related to maternal and fetal heart function as well as fetal gross body and breathing movements. Since fetal breathing generates a significant source of bio-magnetic interference during these recordings, the goal of this study was to identify and quantify the signatures pertaining to fetal breathing movements (FBM). The fMEG signals were captured using superconducting quantum interference devices (SQUIDs) The existence of FBM was verified and recorded concurrently by an ultrasound-based video technique. This simultaneous recording is challenging since SQUIDs are extremely sensitive to magnetic signals and highly susceptible to interference from electronic equipment. For each recording, an ultrasound-FBM (UFBM) signal was extracted by tracing the displacement of the boundary defined by the fetal thorax frame by frame. The start of each FBM was identified by using the peak points of the UFBM signal. The bio-magnetic signals associated with FBM were obtained by averaging the bio-magnetic signals time locked to the FBMs. The results showed the existence of a distinctive sinusoidal signal pattern of FBM in fMEG data.