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 …

Ocular ultrasound imaging of the posterior segment is of clinical importance to diagnose
pathologies such as choroidal vein occlusion, detached retina or macular degeneration,
when OCT is ineffective. Currently, there is no beamforming strategy dedicated to ocular
imaging in order to overcome ultrasound aberrations mainly generated by the crystalline
lens. Actually, lens acts as a defocusing media due to its biconvex geometry where
ultrasound celerity is 10% higher than in the surrounding homogeneous media. As a result …