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Sigma-delta receive beamformer based on cascaded reconstruction for ultrasound imaging application

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Sigma-delta receive beamformer based on cascaded reconstruction for ultrasound imaging application

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dc.contributor.author Cheong, Jia Hao
dc.contributor.author Lam, Yvonne Ying Hung
dc.contributor.author Tiew, Kei Tee
dc.contributor.author Koh, Liang Mong
dc.date.accessioned 2010-05-05T08:58:07Z
dc.date.available 2010-05-05T08:58:07Z
dc.date.copyright 2008
dc.date.issued 2010-05-05T08:58:07Z
dc.identifier.citation Cheong, J. H., Lam, Y. H., Tiew, K. T., & Koh, L. M. (2008) Sigma-delta receive beamformer based on cascaded reconstruction for ultrasound imaging application. IEEE Transactions on Ultrasonics, Feroelectrics, and Frequency Control. 55(9), 1935-1946.
dc.identifier.issn 0885-3010
dc.identifier.uri http://hdl.handle.net/10220/6268
dc.description.abstract A pre-delay reconstruction sigma-delta beamformer (SDBF) was recently proposed to achieve a higher level of integration in ultrasound imaging systems. Nevertheless, the high-order reconstruction filter used in each channel of SDBF makes the beamformer highly complex. The beamformer can be simplified by reconstructing the signal after the delay-andsum process with only one filter. However, this post-delay reconstruction-based design degrades image quality when dynamic focusing is performed. This paper shows that employing a simple pre-delay filter is sufficient to achieve similar performance as conventional pre-delay reconstruction SDBF, as long as the pre-delay filter provides the required pre-delay signalto- quantization noise ratio (SQNR). Based on this finding, we proposed a cascaded reconstruction beamformer that uses a boxcar filter as the pre-delay filter in each channel. Simulations using real phantom data demonstrate that the proposed beamforming method can achieve a contrast resolution comparable to that of the pre-delay reconstruction beamforming method. In addition, the hardware can be greatly simplified compared with the pre-delay reconstruction beamformers.
dc.format.extent 12 p.
dc.language.iso en
dc.relation.ispartofseries IEEE transactions on ultrasonics, feroelectrics, and frequency control
dc.rights © 20098IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. http://www.ieee.org/portal/site This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
dc.subject DRNTU::Engineering::Electrical and electronic engineering
dc.title Sigma-delta receive beamformer based on cascaded reconstruction for ultrasound imaging application
dc.type Journal Article
dc.contributor.school School of Electrical and Electronic Engineering
dc.identifier.doi http://dx.doi.org/10.1109/TUFFC.885
dc.description.version Published version

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