Optimally-weighted non-linear beamformer for conventional focused beam ultrasound imaging systems

Abstract A novel non-linear beamforming method, namely, filtered delay optimally-weighted multiply and sum (F-DowMAS) beamforming is reported for conventional focused beamforming (CFB) technique. The performance of F-DowMAS was compared against delay and sum (DAS), filtered delay multiply and sum (F...

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Autores principales:	Anudeep Vayyeti, Arun K. Thittai
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1bcc59ab257a4abc92015a88f8773f62
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spelling	oai:doaj.org-article:1bcc59ab257a4abc92015a88f8773f622021-11-08T10:52:47ZOptimally-weighted non-linear beamformer for conventional focused beam ultrasound imaging systems10.1038/s41598-021-00741-52045-2322https://doaj.org/article/1bcc59ab257a4abc92015a88f8773f622021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-00741-5https://doaj.org/toc/2045-2322Abstract A novel non-linear beamforming method, namely, filtered delay optimally-weighted multiply and sum (F-DowMAS) beamforming is reported for conventional focused beamforming (CFB) technique. The performance of F-DowMAS was compared against delay and sum (DAS), filtered delay multiply and sum (F-DMAS), filtered delay weight multiply and sum (F-DwMAS) and filter delay Euclidian weighted multiply and sum (F-DewMAS) methods. Notably, in the proposed method the optimal adaptive weights are computed for each imaging point to compensate for the effects due to spatial variations in beam pattern in CFB technique. F-DowMAS, F-DMAS, and DAS were compared in terms of the resulting image quality metrics, Lateral resolution (LR), axial resolution (AR), contrast ratio (CR) and contrast-to-noise ratio (CNR), estimated from experiments on a commercially available tissue-mimicking phantom. The results demonstrate that F-DowMAS improved the AR by 57.04% and 46.95%, LR by 58.21% and 53.40%, CR by 67.35% and 39.25%, and CNR by 44.04% and 30.57% compared to those obtained using DAS and F-DMAS, respectively. Thus, it can be concluded that the newly proposed F-DowMAS outperforms DAS and F-DMAS. As an aside, we also show that the optimal weighting strategy can be extended to benefit DAS.Anudeep VayyetiArun K. ThittaiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Anudeep Vayyeti Arun K. Thittai Optimally-weighted non-linear beamformer for conventional focused beam ultrasound imaging systems
description	Abstract A novel non-linear beamforming method, namely, filtered delay optimally-weighted multiply and sum (F-DowMAS) beamforming is reported for conventional focused beamforming (CFB) technique. The performance of F-DowMAS was compared against delay and sum (DAS), filtered delay multiply and sum (F-DMAS), filtered delay weight multiply and sum (F-DwMAS) and filter delay Euclidian weighted multiply and sum (F-DewMAS) methods. Notably, in the proposed method the optimal adaptive weights are computed for each imaging point to compensate for the effects due to spatial variations in beam pattern in CFB technique. F-DowMAS, F-DMAS, and DAS were compared in terms of the resulting image quality metrics, Lateral resolution (LR), axial resolution (AR), contrast ratio (CR) and contrast-to-noise ratio (CNR), estimated from experiments on a commercially available tissue-mimicking phantom. The results demonstrate that F-DowMAS improved the AR by 57.04% and 46.95%, LR by 58.21% and 53.40%, CR by 67.35% and 39.25%, and CNR by 44.04% and 30.57% compared to those obtained using DAS and F-DMAS, respectively. Thus, it can be concluded that the newly proposed F-DowMAS outperforms DAS and F-DMAS. As an aside, we also show that the optimal weighting strategy can be extended to benefit DAS.
format	article
author	Anudeep Vayyeti Arun K. Thittai
author_facet	Anudeep Vayyeti Arun K. Thittai
author_sort	Anudeep Vayyeti
title	Optimally-weighted non-linear beamformer for conventional focused beam ultrasound imaging systems
title_short	Optimally-weighted non-linear beamformer for conventional focused beam ultrasound imaging systems
title_full	Optimally-weighted non-linear beamformer for conventional focused beam ultrasound imaging systems
title_fullStr	Optimally-weighted non-linear beamformer for conventional focused beam ultrasound imaging systems
title_full_unstemmed	Optimally-weighted non-linear beamformer for conventional focused beam ultrasound imaging systems
title_sort	optimally-weighted non-linear beamformer for conventional focused beam ultrasound imaging systems
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/1bcc59ab257a4abc92015a88f8773f62
work_keys_str_mv	AT anudeepvayyeti optimallyweightednonlinearbeamformerforconventionalfocusedbeamultrasoundimagingsystems AT arunkthittai optimallyweightednonlinearbeamformerforconventionalfocusedbeamultrasoundimagingsystems
_version_	1718442501032902656

Optimally-weighted non-linear beamformer for conventional focused beam ultrasound imaging systems

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