Through-Transmission Acoustical Holography for Medical Imaging—A Status Report

Erikson, K. R.; O’Loughlin, Bernard J.; Flynn, J. J. Witton; Pisa, E. J.; Wreede, J. E.; Greer, Rick; Stauffer, B.; Metherell, A. F.

doi:10.1007/978-1-4615-8216-8_2

Cited by 5 publications

(1 citation statement)

References 6 publications

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“…Acoustic holography generates designed acoustic fields by modulating the interference of wavefronts in free space, [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ] with emerging applications in cell/tissue engineering, [ 9 , 10 , 11 ] medical ultrasound, [ 12 , 13 , 14 , 15 ] particle manipulation, [ 16 , 17 , 18 , 19 ] and particle detection, [ 20 ] where acoustic fields can generate rapid microparticle and cell motion via the emergence of time‐averaged pressure and velocity fields. [ 21 , 22 ] Acoustic holography is achieved by modifying the phase and/or amplitude of the acoustic waves, [ 23 , 24 , 25 , 26 ] where back‐calculated spatial phase/amplitude maps typically generate a single designed acoustic “image” at a select distance from the modulation plane.…”

Section: Introductionmentioning

confidence: 99%

Programmable Acoustic Holography using Medium‐Sound‐Speed Modulation

Wang

Harley

et al. 2023

Advanced Science

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Acoustic holography offers the ability to generate designed acoustic fields to manipulate microscale objects. However, the static nature or large aperture sizes of 3D printed acoustic holographic phase plates limits the ability to rapidly alter generated fields. In this work， a programmable acoustic holography approach is demonstrated by which multiple discrete or continuously variable acoustic targets can be created. Here, the holographic phase plate encodes multiple images, where the desired field is produced by modifying the sound speed of an intervening fluid media. Its flexibility is demonstrated in generating various acoustic patterns, including continuous line segments, discrete letters and numbers, using this method as a sound speed indicator and fluid identification tool. This programmable acoustic holography approach has the advantages of generating reconfigurable and designed acoustic fields, with broad potential in microfluidics, cell/tissue engineering, real‐time sensing, and medical ultrasound.

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