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Microwave-induced thermoacoustic tomography: Reconstruction by synthetic aperture

Feng, Dazi and Xu, Yuan and Ku, Geng and Wang, Lihong V. (2001) Microwave-induced thermoacoustic tomography: Reconstruction by synthetic aperture. Medical Physics, 28 (12). pp. 2427-2431. ISSN 0094-2405. https://resolver.caltech.edu/CaltechAUTHORS:20170203-125952256

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Abstract

We have applied the synthetic-aperture method to linear-scanning microwave-induced thermoacoustic tomography in biological tissues. A nonfocused ultrasonic transducer was used to receive thermoacoustic signals, to which the delay-and-sum algorithm was applied for image reconstruction. We greatly improved the lateral resolution of images and acquired a clear view of the circular boundaries of buried cylindrical objects, which could not be obtained in conventional linear-scanning microwave-induced thermoacoustic tomography based on focused transducers. Two microwave sources, which had frequencies of 9 and 3 GHz, respectively, were used in the experiments for comparison. The 3 GHz system had a much larger imaging depth but a lower signal–noise ratio than the 9 GHz system in near-surface imaging.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1118/1.1418015DOIArticle
http://onlinelibrary.wiley.com/doi/10.1118/1.1418015/abstractPublisherArticle
ORCID:
AuthorORCID
Xu, Yuan0000-0001-9326-2197
Wang, Lihong V.0000-0001-9783-4383
Additional Information:© 2001 American Association of Physicists in Medicine. Received 14 May 2001; accepted for publication 20 September 2001. This project was sponsored in part by the U.S. Army Medical Research and Material Command Grant No. DAMD17-00-1-0455, the National Institutes of Health Grants No. R01 CA71980 and No. R21 CA83760, the National Science Foundation Grant No. BES-9734491, and Texas Higher Education Coordinating Board Grant No. ARP 000512-0123-1999.
Funders:
Funding AgencyGrant Number
Army Medical Research and Materiel CommandDAMD17-00-1-0455
NIHR01 CA71980
NIHR21 CA83760
NSFBES-9734491
Texas Higher Education Coordinating BoardARP 000512-0123-1999
Subject Keywords:thermoacoustics; tomography; synthetic aperture; microwave
Issue or Number:12
Record Number:CaltechAUTHORS:20170203-125952256
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170203-125952256
Official Citation:Feng, D., Xu, Y., Ku, G. and Wang, L. V. (2001), Microwave-induced thermoacoustic tomography: Reconstruction by synthetic aperture. Med. Phys., 28: 2427–2431. doi:10.1118/1.1418015
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:74030
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:04 Feb 2017 02:55
Last Modified:03 Oct 2019 16:33

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