Simultaneous pulse wave and flow estimation at high-framerate using plane wave and transverse oscillation on carotid phantom
Résumé
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.
Fichier principal
perrot_2017_Simultaneous_pulse_wave_and_flow_estimation_at_high_framerate_using_plane_wave_and_transverse_oscillation_on_carotid_phantom.pdf (629.63 Ko)
Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...