Pixel-reassignment in ultrasound imaging

Tal I. Sommer; Ori Katz

doi:10.1063/5.0062716

Pixel-reassignment in ultrasound imaging

Tal I. Sommer, Ori Katz^*

^*Corresponding author for this work

Department of Applied Physics

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

3 Scopus citations

Abstract

We present an adaptation of the pixel-reassignment technique from confocal fluorescent microscopy to coherent ultrasound imaging. The method, ultrasound pixel-reassignment (UPR), provides a resolution and signal to noise (SNR) improvement in ultrasound imaging by computationally reassigning off-focus signals acquired using traditional plane wave compounding ultrasonography. We theoretically analyze the analogy between the optical and ultrasound implementations of pixel reassignment and experimentally evaluate the imaging quality on tissue-mimicking acoustic phantoms. We demonstrate that UPR provides a 25% resolution improvement and a 3 dB SNR improvement in in vitro scans without any change in hardware or acquisition schemes.

Original language	American English
Article number	123701
Journal	Applied Physics Letters
Volume	119
Issue number	12
DOIs	https://doi.org/10.1063/5.0062716
State	Published - 20 Sep 2021

Bibliographical note

Funding Information:
This work has received funding from the Israel Science Foundation (Grant No. 1361/18), the European Research Council (ERC) Horizon 2020 research and innovation program (No. 677909), and was supported by the Ministry of Science and Technology in Israel.

Publisher Copyright:
© 2021 Author(s).

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abstract = "We present an adaptation of the pixel-reassignment technique from confocal fluorescent microscopy to coherent ultrasound imaging. The method, ultrasound pixel-reassignment (UPR), provides a resolution and signal to noise (SNR) improvement in ultrasound imaging by computationally reassigning off-focus signals acquired using traditional plane wave compounding ultrasonography. We theoretically analyze the analogy between the optical and ultrasound implementations of pixel reassignment and experimentally evaluate the imaging quality on tissue-mimicking acoustic phantoms. We demonstrate that UPR provides a 25% resolution improvement and a 3 dB SNR improvement in in vitro scans without any change in hardware or acquisition schemes.",

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AB - We present an adaptation of the pixel-reassignment technique from confocal fluorescent microscopy to coherent ultrasound imaging. The method, ultrasound pixel-reassignment (UPR), provides a resolution and signal to noise (SNR) improvement in ultrasound imaging by computationally reassigning off-focus signals acquired using traditional plane wave compounding ultrasonography. We theoretically analyze the analogy between the optical and ultrasound implementations of pixel reassignment and experimentally evaluate the imaging quality on tissue-mimicking acoustic phantoms. We demonstrate that UPR provides a 25% resolution improvement and a 3 dB SNR improvement in in vitro scans without any change in hardware or acquisition schemes.

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Pixel-reassignment in ultrasound imaging

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