Simultaneous pulse wave and flow estimation at high-framerate using plane wave and transverse oscillation on carotid phantom

Vincent Perrot (1) , Lorena Petrusca (1) , Adeline Bernard (1) , Didier Vray (1) , Herve Liebgott (1)

1 Imagerie Ultrasonore

In this paper a global estimation method based on transverse oscillation to simultaneously extract wall and flow velocities at high-framerate is presented. Several carotid phantoms with various parameters were made to validate the method. All acquisitions were performed at high-framerate (7 500 images per second) using horizontal plane wave with a 3 cycles sinusoidal transmit pulse. Transverse oscillation was introduced in post-acquisition. Finally, velocity vectors were extracted thanks to a phase based estimator with a region of interest of 2 mm (8 axial wavelengths) per 2.96 mm (2 lateral wavelengths) for each pixel. Results are promising, all standard deviations are lower than 10 % and the method is now validated for a deeper study. Indeed, flow and pulse wave velocities computed by the algorithm are in accordance with pressure columns and number of freezethaw cycles.

Mots clés: transverse oscillation; pulse wave; carotid phantom; flow; flow estimation; motion estimation; plane wave

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

Vincent Perrot, Lorena Petrusca, Adeline Bernard, Didier Vray, Herve Liebgott. Simultaneous pulse wave and flow estimation at high-framerate using plane wave and transverse oscillation on carotid phantom. IEEE International Ultrasonics Symposium, 2017, Washington, USA, United States. ⟨10.1109/ULTSYM.2017.8091999⟩. ⟨hal-01894173⟩