Estimation of wavelet and short-time Fourier transform sonograms of normal and diabetic subjects' electrogastrogram


Dirgenali F., Kara S., Okkesim S.

COMPUTERS IN BIOLOGY AND MEDICINE, vol.36, no.12, pp.1289-1302, 2006 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 36 Issue: 12
  • Publication Date: 2006
  • Doi Number: 10.1016/j.compbiomed.2005.07.005
  • Journal Name: COMPUTERS IN BIOLOGY AND MEDICINE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1289-1302
  • Keywords: electrogastrography, gastric electrical dysrhythmia, spectral analysis, wavelet transform, short-time Fourier transform, sonogram, GASTRIC ELECTRICAL-ACTIVITY, SPECTRAL-ANALYSIS, CUTANEOUS RECORDINGS, STOMACH, GASTROPARESIS, ABNORMALITIES, TACHYGASTRIA, HUMANS
  • Erciyes University Affiliated: No

Abstract

Electrogastrography (EGG) is a noninvasive way to record gastric electrical activity of stomach muscle by placing electrodes on the abdominal skin. Our goal was to investigate the frequency of abnormalities of the EGG in real clinical diabetic gastroparesis patients using WT method and to compare performance of STIFT and WT methods in the case of time-frequency resolution. The results showed that WT sonograms can be used to classify patients successfully as healthy or sick. And also, due to the fact that the WT method does not suffer from some intrinsic problems that affect the STFT method, one can see that the WT method can help improve the quality of the sonogram of the EGG signals. (c) 2005 Elsevier Ltd. All rights reserved.