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Strategies for data acquisition using ultrasonic phased arrays

Ultrasonic phased arrays have produced major benefits in a range of fields, from medical imaging to non-destructive evaluation. The maximum information, which can be measured by an array, corresponds to the Full Matrix Capture (FMC) data acquisition technique and contains all possible combinations o...

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Detalles Bibliográficos
Autores principales: Velichko, A., Croxford, A. J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society Publishing 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6237505/
https://www.ncbi.nlm.nih.gov/pubmed/30839841
http://dx.doi.org/10.1098/rspa.2018.0451
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author Velichko, A.
Croxford, A. J.
author_facet Velichko, A.
Croxford, A. J.
author_sort Velichko, A.
collection PubMed
description Ultrasonic phased arrays have produced major benefits in a range of fields, from medical imaging to non-destructive evaluation. The maximum information, which can be measured by an array, corresponds to the Full Matrix Capture (FMC) data acquisition technique and contains all possible combinations of transmitter–receiver signals. However, this method is not fast enough for some applications and can result in a very large volume of data. In this paper, the problem of optimal array data acquisition strategy is considered, that is, how to make the minimum number of array measurements without loss of information. The main result is that under the single scattering assumption the FMC dataset has a specific sparse structure, and this property can be used to design an optimal data acquisition method. An analytical relationship between the minimum number of array firings, maximum steering angle and signal-to-noise ratio is derived, and validated experimentally. An important conclusion is that the optimal number of emissions decreases when the angular aperture of the array increases. It is also shown that plane wave imaging data are equivalent to the FMC dataset, but requires up to an order of magnitude fewer array firings.
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spelling pubmed-62375052018-12-25 Strategies for data acquisition using ultrasonic phased arrays Velichko, A. Croxford, A. J. Proc Math Phys Eng Sci Research Articles Ultrasonic phased arrays have produced major benefits in a range of fields, from medical imaging to non-destructive evaluation. The maximum information, which can be measured by an array, corresponds to the Full Matrix Capture (FMC) data acquisition technique and contains all possible combinations of transmitter–receiver signals. However, this method is not fast enough for some applications and can result in a very large volume of data. In this paper, the problem of optimal array data acquisition strategy is considered, that is, how to make the minimum number of array measurements without loss of information. The main result is that under the single scattering assumption the FMC dataset has a specific sparse structure, and this property can be used to design an optimal data acquisition method. An analytical relationship between the minimum number of array firings, maximum steering angle and signal-to-noise ratio is derived, and validated experimentally. An important conclusion is that the optimal number of emissions decreases when the angular aperture of the array increases. It is also shown that plane wave imaging data are equivalent to the FMC dataset, but requires up to an order of magnitude fewer array firings. The Royal Society Publishing 2018-10 2018-10-17 /pmc/articles/PMC6237505/ /pubmed/30839841 http://dx.doi.org/10.1098/rspa.2018.0451 Text en © 2018 The Authors. http://creativecommons.org/licenses/by/4.0/ Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.
spellingShingle Research Articles
Velichko, A.
Croxford, A. J.
Strategies for data acquisition using ultrasonic phased arrays
title Strategies for data acquisition using ultrasonic phased arrays
title_full Strategies for data acquisition using ultrasonic phased arrays
title_fullStr Strategies for data acquisition using ultrasonic phased arrays
title_full_unstemmed Strategies for data acquisition using ultrasonic phased arrays
title_short Strategies for data acquisition using ultrasonic phased arrays
title_sort strategies for data acquisition using ultrasonic phased arrays
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6237505/
https://www.ncbi.nlm.nih.gov/pubmed/30839841
http://dx.doi.org/10.1098/rspa.2018.0451
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