Energy-based adaptive focusing of waves: application to noninvasive aberration correction of ultrasonic wavefields.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Eric HerbertM Tanter

Abstract

An aberration correction method based on the maximization of the wave intensity at the focus of an emitting array is presented. The potential of this new adaptive focusing technique is investigated for ultrasonic focusing in biological tissues. The acoustic intensity is maximized noninvasively through direct measurement or indirect estimation of the beam energy at the focus for a series of spatially coded emissions. For ultrasonic waves, the acoustic energy at the desired focus can be indirectly estimated from the local displacements induced in tissues by the ultrasonic radiation force of the beam. Based on the measurement of these displacements, this method allows determination of the precise estimation of the phase and amplitude aberrations, and consequently the correction of aberrations along the beam travel path. The proof of concept is first performed experimentally using a large therapeutic array with strong electronic phase aberrations (up to 2pi). Displacements induced by the ultrasonic radiation force at the desired focus are indirectly estimated using the time shift of backscattered echoes recorded on the array. The phase estimation is deduced accurately using a direct inversion algorithm which reduces the standard de...Continue Reading

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Citations

Aug 17, 2012·The Journal of the Acoustical Society of America·Yue Li, Brent Robinson
Aug 14, 2010·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Benoît LarratMickaël Tanter
Dec 12, 2013·International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·Adamos KyriakouNiels Kuster
Oct 24, 2018·Expert Review of Medical Devices·Matthew W Urban
Oct 30, 2013·Bioinspiration & Biomimetics·Qu Cao, Ioannis Poulakakis
May 25, 2011·Physics in Medicine and Biology·Vincent AuboirouxRares Salomir
Nov 2, 2014·Optics Letters·Jian Wei TayLihong V Wang
Dec 31, 2015·Physics in Medicine and Biology·Charles MougenotJames M Drake
May 3, 2019·Applied Optics·Li ZhanJianqiang Zhu
Jan 15, 2015·Physics in Medicine and Biology·Na LiuLaurent Daudet
Jul 13, 2016·Physics in Medicine and Biology·Charles MougenotJames M Drake
Mar 10, 2012·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Jochen AulbachArnaud Tourin

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