The performance and reliability of wavelet denoising for doppler ultrasound fetal heart rate signal preprocessing

S. Papadimitriou, V. Papadopoulos, D. Gatzounas, V. Tzigounis, A. Bezerianos

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The present paper deals with the performance and the reliability of a Wavelet Denoising method for Doppler ultrasound Fetal Heart Rate (FHR) recordings. It displays strong evidence that the denoising process extracts the actual noise components. The analysis is approached with three methods. First, the power spectrum of the denoised FHR displays more clearly an l/fa scaling law, i.e. the characteristic of fractal time series. Second, the rescaled scale analysis technique reveals a Hurst exponent at the range of 0.7-0.8 that corresponds to a long memory persistent process. Moreover, the variance of the Hurst exponent across time scales is smaller at the denoised signal. Third, a chaotic attractor reconstructed with the embedding dimension technique becomes evident at the denoised signals, while it is completely obscured at the unfiltered ones.

Original languageEnglish (US)
Title of host publicationMedical Informatics Europe 1997, MIE 1997
PublisherIOS Press
Pages561-565
Number of pages5
ISBN (Print)9051993439, 9789051993431
DOIs
StatePublished - Jan 1 1997
Event14th Conference on Medical Informatics Europe 1997, MIE 1997 - Thessaloniki, Greece
Duration: May 25 1997May 29 1997

Publication series

NameStudies in Health Technology and Informatics
Volume43
ISSN (Print)0926-9630
ISSN (Electronic)1879-8365

Other

Other14th Conference on Medical Informatics Europe 1997, MIE 1997
CountryGreece
CityThessaloniki
Period5/25/975/29/97

ASJC Scopus subject areas

  • Biomedical Engineering
  • Health Informatics
  • Health Information Management

Fingerprint Dive into the research topics of 'The performance and reliability of wavelet denoising for doppler ultrasound fetal heart rate signal preprocessing'. Together they form a unique fingerprint.

Cite this