Title :
A beamforming strategy dedicated to post lens ultrasound imaging and ocular biometry at 20 MHz
Author :
Matéo, T. ; Mofid, Y. ; Grégoire, J-M ; Ossant, F.
Author_Institution :
Centre-Val de Loire Univ. Francois-Rabelais de Tours, Tours, France
Abstract :
Acoustical properties of a porcine eye lens are investigated at high frequencies (10 to 24 MHz). The obtained values are used to perform a beamforming (BF) method dedicated to post lens imaging through a linear ultrasound (US) scanning using an US research scanner developed in our laboratory called the ECODERM. The probe consists of a 128 elements linear array working at 20 MHz. The performances of the developed BF method are compared with those of a classical BF having the same linear scanning. The comparison quantifies both axial and lateral resolution, image contrast, and the spatial mislocalization induced by lens.
Keywords :
biomedical ultrasonics; image resolution; lenses; medical image processing; optical scanners; ultrasonic imaging; ECODERM; US research scanner; acoustical properties; beamforming strategy; classical BF method; frequency 10 MHz to 24 MHz; lens ultrasound imaging; linear ultrasound scanning; ocular biometry; porcine eye lens; spatial mislocalization; Acoustic measurements; Acoustics; Attenuation; Imaging; Lenses; Probes; Ultrasonic imaging; 20 MHz; eye dedicated beamforming; lens acoustical caracterization; mislocalization correction; ocular biometry;
Conference_Titel :
Ultrasonics Symposium (IUS), 2011 IEEE International
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4577-1253-1
DOI :
10.1109/ULTSYM.2011.0545
