A High-Performance 3D Imaging Technique Using Simultaneous Azimuth and Elevation Compounding

Nicholas A. Campbell; Nicole MacMullin; Rachel Kiefl; Eptehal Nashnoush; Katherine Latham; Charles Emery; Jeremy A. Brown

doi:10.1109/TUFFC.2022.3218732

A High-Performance 3D Imaging Technique Using Simultaneous Azimuth and Elevation Compounding

Nicholas A. Campbell, Nicole MacMullin, Rachel Kiefl, Eptehal Nashnoush, Katherine Latham, Charles Emery, Jeremy A. Brown

Medicine

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

A new technique for 3D imaging with a row-column array configuration has been developed. The technique requires an electrostrictive piezoelectric for the active substrate. While the top set of electrodes are connected to RF transmit and receive channels for conventional diverging wave imaging, the orthogonal bottom set of electrodes are connected to independently controlled variable DC bias channels. By implementing modulated bias patterns compounded across multiple pulses, fine delay control across the bottom elements can be achieved simultaneously to imaging with the top set of electrodes. This resulted in a high-quality 2-way focus in both azimuth and elevation. A 20 MHz electrostrictive composite substrate was fabricated and 64 top x 64 bottom electrodes were patterned and connected to custom beamforming and biasing electronics. The point spread functions were generated in all dimensions and the -6 dB resolution was measured to be 93 μm axially, 272 μm in the azimuth, and 328 μm in the elevation dimension. This was in good agreement with the simulated resolutions of 80 μm, 273 μm, and 280 μm respectively.

Original language	English
Pages (from-to)	1
Number of pages	1
Journal	IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
DOIs	https://doi.org/10.1109/TUFFC.2022.3218732
Publication status	Accepted/In press - 2022

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Publisher Copyright:
IEEE

ASJC Scopus Subject Areas

Instrumentation
Acoustics and Ultrasonics
Electrical and Electronic Engineering

PubMed: MeSH publication types

Journal Article

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10.1109/TUFFC.2022.3218732

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abstract = "A new technique for 3D imaging with a row-column array configuration has been developed. The technique requires an electrostrictive piezoelectric for the active substrate. While the top set of electrodes are connected to RF transmit and receive channels for conventional diverging wave imaging, the orthogonal bottom set of electrodes are connected to independently controlled variable DC bias channels. By implementing modulated bias patterns compounded across multiple pulses, fine delay control across the bottom elements can be achieved simultaneously to imaging with the top set of electrodes. This resulted in a high-quality 2-way focus in both azimuth and elevation. A 20 MHz electrostrictive composite substrate was fabricated and 64 top x 64 bottom electrodes were patterned and connected to custom beamforming and biasing electronics. The point spread functions were generated in all dimensions and the -6 dB resolution was measured to be 93 μm axially, 272 μm in the azimuth, and 328 μm in the elevation dimension. This was in good agreement with the simulated resolutions of 80 μm, 273 μm, and 280 μm respectively.",

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AU - Kiefl, Rachel

AU - Nashnoush, Eptehal

AU - Latham, Katherine

AU - Emery, Charles

AU - Brown, Jeremy A.

N1 - Publisher Copyright: IEEE

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A High-Performance 3D Imaging Technique Using Simultaneous Azimuth and Elevation Compounding

Abstract

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