Document Detail


Bio-magnetic signatures of fetal breathing movement.
MedLine Citation:
PMID:  21252416     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
U D Ulusar; J D Wilson; P Murphy; R B Govindan; H Preissl; C L Lowery; H Eswaran
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  Physiological measurement     Volume:  32     ISSN:  1361-6579     ISO Abbreviation:  Physiol Meas     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-02-15     Completed Date:  2011-07-15     Revised Date:  2014-09-20    
Medline Journal Info:
Nlm Unique ID:  9306921     Medline TA:  Physiol Meas     Country:  England    
Other Details:
Languages:  eng     Pagination:  263-73     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Female
Fetal Movement / physiology*
Humans
Image Interpretation, Computer-Assisted
Magnetics / methods*
Magnetoencephalography
Movement / physiology*
Pregnancy
Respiration*
Ultrasonography, Prenatal
Grant Support
ID/Acronym/Agency:
1 R01 EB007826-01A1/EB/NIBIB NIH HHS; 5R01NS036277-10/NS/NINDS NIH HHS; R01 EB007826/EB/NIBIB NIH HHS; R01 EB007826-01A1/EB/NIBIB NIH HHS; R01 NS036277/NS/NINDS NIH HHS; R01 NS036277-10/NS/NINDS NIH HHS
Comments/Corrections

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