Spectral correlation of the embolic blood Doppler signal

Jean-Marc Girault (1) , Mathieu Biard (1, 2) , Denis Kouamé (3, 1) , Aurore Bleuzen (1, 2) , François Tranquart (4, 1)

1 LUSSI - Laboratoire Ultrasons Signaux et Instrumentation
2 INSERM - Institut National de la Santé et de la Recherche Médicale
3 IRIT-TCI - Traitement et Compréhension d’Images
4 iBraiN - Imaging, Brain & Neuropsychiatry

In a previous study we have shown that take into account the quasi-cyclostationary properties of the blood Doppler signal is useful to detect embolus (red blood cell aggregates). In this latter approach, we have first considered a simple "off-line" synchronous detector. As results were very interesting, we have thought that the correlation spectrum could be an interesting alternative to the synchronous detection. As the correlation spectrum of in vivo signal seems to be too complicated, we propose here to elucidate this apparent complexity by analytically computing the correlation spectrum of Doppler signal model with or without embolus.

Mots clés: Doppler; ultrasound; emboli detection; spectral correlation; cyclostationarity; signal analysis; frequency; signal processing; analytical models

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

Jean-Marc Girault, Mathieu Biard, Denis Kouamé, Aurore Bleuzen, François Tranquart. Spectral correlation of the embolic blood Doppler signal. IEEE International Conerence on Acoustics, Speech, and Signal Processing, May 2006, Toulouse, France. pp.1200-1203, ⟨10.1109/ICASSP.2006.1660564⟩. ⟨hal-03149784⟩