Three-dimensional real-time synthetic aperture imaging using a rotating phased array transducer

Svetoslav Nikolov, Remi Dufait, Armin Schoisswohl, Jørgen Arendt Jensen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

420 Downloads (Pure)

Abstract

Current 3D real-time imaging is done either with sparse 2D arrays, or with mechanically moved phased arrays. The former results in a poor resolution and contrast due to a limited amount of elements. The latter has the disadvantage of low frame rates due to the sequential acquisition of the volume line-by-line and plane-by-plane. This paper describes an approach which combines mechanically moved phased array with synthetic transmit aperture imaging, resulting in high volume acquisition rates without a trade-off in image quality. The scan method uses a conventional fully populated 64 element phased array, which is rotated over the volume of interest. The data is acquired using coded signals and synthetic transmit aperture imaging. Only one group of elements transmits at a time. The delays are set such as to form a cylindrical wave. The back-scattered signal carries information not only from the plane located directly below the transducer, but also from neighboring planes. A complete dataset for all elements for the whole rotation is acquired and stored. The volume is then focused from this complete data set in order to obtain dynamic transmit and receive focusing in all directions.
Original languageEnglish
Title of host publicationProceedings of IEEE Ultrasonics Symposium, 2002.
PublisherIEEE
Publication date2002
Pages1545-1548
ISBN (Print)0-7803-7582-3
DOIs
Publication statusPublished - 2002
Event2002 IEEE Ultrasonics Symposium - Munich, Germany
Duration: 8 Oct 200211 Oct 2002
http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=8480

Conference

Conference2002 IEEE Ultrasonics Symposium
CountryGermany
CityMunich
Period08/10/200211/10/2002
Internet address

Bibliographical note

Copyright: 2002 IEEE. 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

Cite this

Nikolov, S., Dufait, R., Schoisswohl, A., & Jensen, J. A. (2002). Three-dimensional real-time synthetic aperture imaging using a rotating phased array transducer. In Proceedings of IEEE Ultrasonics Symposium, 2002. (pp. 1545-1548). IEEE. https://doi.org/10.1109/ULTSYM.2002.1192596