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Limited view thermoacoustic tomography

Xu, Yuan and Wang, Lihong V. (2002) Limited view thermoacoustic tomography. In: Proceedings of the Second Joint 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society. Vol.2. IEEE , Piscataway, NJ, pp. 937-938. ISBN 0780376129. https://resolver.caltech.edu/CaltechAUTHORS:20190304-143523105

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Abstract

Truncated conjugate gradient method was applied to study the limited view problem in thermoacoustic tomography, and the results were compared with those of modified backprojection method, which is the backprojection of the first order time derivative of acoustic signals. Our numerical simulations showed that there is complete data for a stable and perfect reconstruction in a 2-D π-view problem, where the least angle acquired by the detection curve is π when viewed from the imaged region of interest. On the contrary, in a problem where the view is less than π, data is incomplete, and artifacts and quantitative errors were obvious in the reconstructed images. It was pointed out that the result after one iteration in truncated conjugate gradient method is equivalent to that of modified backprojection, which can restore the high frequency information of imaged objects. The low frequency information can be recovered significantly in the next ten iterations of truncated conjugate gradient method.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1109/iembs.2002.1106214DOIArticle
ORCID:
AuthorORCID
Xu, Yuan0000-0001-9326-2197
Wang, Lihong V.0000-0001-9783-4383
Additional Information:© 2002 IEEE. This project was sponsored in part by the U.S. Army Medical Research and Materiel 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 Board000512-0123-1999
Subject Keywords:Thermoacoustic tomography, limited view, truncated conjugate gradient
DOI:10.1109/iembs.2002.1106214
Record Number:CaltechAUTHORS:20190304-143523105
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190304-143523105
Official Citation:Yuan Xu and L. V. Wang, "Limited view thermoacoustic tomography," Proceedings of the Second Joint 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society] [Engineering in Medicine and Biology, Houston, TX, USA, 2002, pp. 937-938 vol.2. doi: 10.1109/IEMBS.2002.1106214
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:93464
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:05 Mar 2019 18:09
Last Modified:16 Nov 2021 16:57

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