High Resolution Processing Techniques for Ultrasound Doppler Velocimetry in presence of colored noise Part I : Nonstationary Methods

Denis Kouamé (1, 2) , Jean-Marc Girault (2) , Frédéric Patat (2)

1 IRIT-TCI - Traitement et Compréhension d’Images
2 LUSSI - Laboratoire Ultrasons Signaux et Instrumentation

Real-time flow velocity measurement is a practical issue in industrial and biomedical applications. Because their good frequency resolution, parametric methods such as autoregressive (AR) modeling and time-frequency distributions (TFD) are generally preferred to Fourier analysis. However, these methods become highly inaccurate in the presence of colored noise. We review here the principal parametric and nonparametric techniques and show their limitations in the estimation of Doppler frequency in the presence of strong colored noise. Different solutions to overcome these limitations are then proposed and compared using synthetic Doppler signals with colored noise.

Mots clés: Algorithms; Blood Flow Velocity; Blood Vessels; Image Enhancement; Models; Statistical; Quality Control; Rheology; Sensitivity and Specificity; Stochastic Processes; Ultrasonography; Doppler

Domaines: Traitement du signal et de l'image [eess.SP]

Denis Kouamé, Jean-Marc Girault, Frédéric Patat. High Resolution Processing Techniques for Ultrasound Doppler Velocimetry in presence of colored noise Part I : Nonstationary Methods. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2003, 50 (3), pp.257--266. ⟨10.1109/TUFFC.2003.1193619⟩. ⟨hal-03149796⟩