Application of FFT and arma spectral analysis to arterial doppler signals


Übeyli E. D. , Işik H., GÜLER İ.

Mathematical and Computational Applications, cilt.8, ss.311-318, 2003 (SCI Expanded İndekslerine Giren Dergi) identifier

  • Cilt numarası: 8
  • Basım Tarihi: 2003
  • Doi Numarası: 10.3390/mca8030311
  • Dergi Adı: Mathematical and Computational Applications
  • Sayfa Sayıları: ss.311-318

Özet

In this study, Doppler signals recorded from arteries of 105 subjects were processed by PC-computer using fast Fourier transform, and least squares modified Yule-Walker autoregressive moving average methods. By using these spectrum analysis techniques, the variations in the shape of the Doppler spectrums as a function of time were presented in the form of sonograms in order to obtain medical information. These sonograms were then used to compare the applied methods in terms of their frequency resolution and the effects in determination of stenosis and occlusion in arteries. Reliable information, on hemodynamic alterations in arteries can be obtained by evaluation of these sonograms.