Passive fetal monitoring by adaptive wavelet denoising method

Fetal Heart Rate (FHR) monitoring is one of the most important fetal well being tests. Existing FHR monitoring methods are based on Doppler ultrasound technique, which has several disadvantages. Passive fetal monitoring by phonocardiography is an appropriate alternative; however, its implementation is a challenging task due to low energy of fetal heart sounds and multiple interference signals presence. In this paper, an advanced signal processing method for passive fetal monitoring based on adaptive wavelet denoising is presented. The method's performance is compared with Doppler ultrasound monitor. The results show 94-97.5% accuracy, including highly disturbed cases.

[1]  J Nagel,et al.  New diagnostic and technical aspects of fetal phonocardiography. , 1986, European journal of obstetrics, gynecology, and reproductive biology.

[2]  David M. Holburn,et al.  Real time analysis of fetal phonography signals using the TMS320 , 1989 .

[3]  J M Dambrosia,et al.  Uncertain value of electronic fetal monitoring in predicting cerebral palsy. , 1996, The New England journal of medicine.

[4]  J.T.E. McDonnell,et al.  Knowledge-based interpretation of foetal phonocardiographic signals , 1990 .

[5]  H. V. van Geijn,et al.  The quality of intrapartum fetal heart rate monitoring. , 2004, European journal of obstetrics, gynecology, and reproductive biology.

[6]  C. Martin.  Electronic fetal monitoring: a brief summary of its development, problems and prospects. , 1998, European journal of obstetrics, gynecology, and reproductive biology.

[7]  Derek Abbott,et al.  Optimal wavelet denoising for phonocardiograms , 2001 .

[8]  D. P. Southall,et al.  THE FETAL PHONOGRAM: A MEASURE OF FETAL ACTIVITY , 1986, The Lancet.

[9]  Michelle L. Murray,et al.  Antepartal and Intrapartal Fetal Monitoring , 1988 .

[10]  S. Mallat.  A wavelet tour of signal processing , 1998 .

[11]  Vijay Chourasia,et al.  Passive Acoustic Signal Acquisition System for Non- Invasive Fetal Heart Sound Monitoring Applications. , 2008 .

[12]  A. J. Zuckerwar,et al.  Development of a piezopolymer pressure sensor for a portable fetal heart rate monitor , 1993, IEEE Transactions on Biomedical Engineering.

[13]  P. Varady,et al.  Wavelet-based adaptive denoising of phonocardiographic records , 2001, 2001 Conference Proceedings of the 23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society.

[14]  P. Massart,et al.  From Model Selection to Adaptive Estimation , 1997 .

[15]  Y. Song,et al.  Passive acoustic maternal abdominal fetal heart rate monitoring using wavelet transform , 2006, 2006 Computers in Cardiology.

[16]  D. Donoho,et al.  Translation-Invariant De-Noising , 1995 .

[17]  A. T. Aljama,et al.  Performance of a method to generate fetal cardiotachograms using fetal phonocardiography , 2001, Computers in Cardiology 2001. Vol.28 (Cat. No.01CH37287).

[18]  Zoltán Benyó,et al.  An advanced method in fetal phonocardiography , 2003, Comput. Methods Programs Biomed..

[19]  Joel W. Burdick,et al.  Spike detection using the continuous wavelet transform , 2005, IEEE Transactions on Biomedical Engineering.

[20]  Ferenc Kovács,et al.  A rule-based phonocardiographic method for long-term fetal heart rate monitoring , 2000, IEEE Transactions on Biomedical Engineering.

[21]  Ying Song,et al.  A portable phonocardiographic fetal heart rate monitor , 2006, 2006 IEEE International Symposium on Circuits and Systems.

[22]  Mark E. Schafer,et al.  From the Cover : Prenatal exposure to ultrasound waves impacts neuronal migration in mice , 2006 .

[23]  K. Salvesen,et al.  EFSUMB: safety tutorial: epidemiology of diagnostic ultrasound exposure during pregnancy-European committee for medical ultrasound safety (ECMUS). , 2002, European journal of ultrasound : official journal of the European Federation of Societies for Ultrasound in Medicine and Biology.

[24]  Morton W. Miller,et al.  Quantification of risk from fetal exposure to diagnostic ultrasound. , 2007, Progress in biophysics and molecular biology.

[25]  David L. Donoho,et al.  De-noising by soft-thresholding , 1995, IEEE Trans. Inf. Theory.

[26]  I. Johnstone,et al.  Adapting to Unknown Smoothness via Wavelet Shrinkage , 1995 .

[27]  Gábor Hosszú,et al.  Extended Noninvasive Fetal Monitoring by Detailed Analysis of Data Measured With Phonocardiography , 2011, IEEE Transactions on Biomedical Engineering.

[28]  Christopher J. James,et al.  Blind source separation to extract foetal heart sounds from noisy abdominal phonograms: a single channel method , 2008 .

[29]  H. V. van Geijn,et al.  Quality of intrapartum cardiotocography in twin deliveries. , 2004, American journal of obstetrics and gynecology.