Scalable Intersample Interpolation Architecture for High-channel-count Beamformers

Borislav Gueorguiev Tomov; Svetoslav I Nikolov; Jørgen Arendt Jensen

doi:10.1109/ULTSYM.2011.0091

Scalable Intersample Interpolation Architecture for High-channel-count Beamformers

Borislav Gueorguiev Tomov, Svetoslav I Nikolov, Jørgen Arendt Jensen

BK Medical ApS

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

Modern ultrasound scanners utilize digital beamformers that operate on sampled and quantized echo signals. Timing precision is of essence for achieving good focusing. The direct way to achieve it is through the use of high sampling rates, but that is not economical, so interpolation between echo samples is used. This paper presents a beamformer architecture that combines a band-pass filter-based interpolation algorithm with the dynamic delay-and-sum focusing of a digital beamformer. The reduction in the number of multiplications relative to a linear perchannel interpolation and band-pass per-channel interpolation architecture is respectively 58 % and 75 % beamformer for a 256-channel beamformer using 4-tap filters. The approach allows building high channel count beamformers while maintaining high image quality due to the use of sophisticated intersample interpolation.

Original language	English
Title of host publication	Proceedings of the 2011 IEEE International Ultrasonics Symposium
Number of pages	4
Publisher	IEEE
Publication date	2011
Pages	381-384
ISBN (Print)	978-1-4577-1251-7
DOIs	https://doi.org/10.1109/ULTSYM.2011.0091
Publication status	Published - 2011
Event	2011 IEEE International Ultrasonics Symposium - Caribe Royale, Orlando, United States Duration: 18 Oct 2011 → 21 Oct 2011 http://ewh.ieee.org/conf/ius_2011/ https://ieeexplore.ieee.org/xpl/conhome/6269152/proceeding

Conference

Conference	2011 IEEE International Ultrasonics Symposium
Location	Caribe Royale
Country/Territory	United States
City	Orlando
Period	18/10/2011 → 21/10/2011
Internet address	http://ewh.ieee.org/conf/ius_2011/ https://ieeexplore.ieee.org/xpl/conhome/6269152/proceeding

Keywords

Focusing
Beamforming
Interpolation

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10.1109/ULTSYM.2011.0091

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http://ewh.ieee.org/conf/ius_2011/index.html

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title = "Scalable Intersample Interpolation Architecture for High-channel-count Beamformers",

abstract = "Modern ultrasound scanners utilize digital beamformers that operate on sampled and quantized echo signals. Timing precision is of essence for achieving good focusing. The direct way to achieve it is through the use of high sampling rates, but that is not economical, so interpolation between echo samples is used. This paper presents a beamformer architecture that combines a band-pass filter-based interpolation algorithm with the dynamic delay-and-sum focusing of a digital beamformer. The reduction in the number of multiplications relative to a linear perchannel interpolation and band-pass per-channel interpolation architecture is respectively 58 % and 75 % beamformer for a 256-channel beamformer using 4-tap filters. The approach allows building high channel count beamformers while maintaining high image quality due to the use of sophisticated intersample interpolation.",

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Y1 - 2011

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AB - Modern ultrasound scanners utilize digital beamformers that operate on sampled and quantized echo signals. Timing precision is of essence for achieving good focusing. The direct way to achieve it is through the use of high sampling rates, but that is not economical, so interpolation between echo samples is used. This paper presents a beamformer architecture that combines a band-pass filter-based interpolation algorithm with the dynamic delay-and-sum focusing of a digital beamformer. The reduction in the number of multiplications relative to a linear perchannel interpolation and band-pass per-channel interpolation architecture is respectively 58 % and 75 % beamformer for a 256-channel beamformer using 4-tap filters. The approach allows building high channel count beamformers while maintaining high image quality due to the use of sophisticated intersample interpolation.

KW - Focusing

KW - Beamforming

KW - Interpolation

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DO - 10.1109/ULTSYM.2011.0091

M3 - Article in proceedings

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ER -

Scalable Intersample Interpolation Architecture for High-channel-count Beamformers

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