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Signal processing in microwave-induced thermoacoustic tomography

Xu, Yuan and Wang, Lihong V. (2001) Signal processing in microwave-induced thermoacoustic tomography. In: Biomedical Optoacoustics II. Proceedings of SPIE. No.4256. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 84-89. ISBN 9780819439345. https://resolver.caltech.edu/CaltechAUTHORS:20181207-161547686

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Abstract

Microwave-induced thermoacoustic tomography was explored to image biological tissues. Short microwave pulses irradiated tissues to generate acoustic waves by thermoelastic expansion. The microwave-induced thermoacoustic waves were detected with a focused ultrasonic transducer to obtain two-dimensional tomographic images of biological tissues. The dependence of the axial and the lateral resolutions on the spectra of the signals was studied. A self-adaptive filter was applied to the temporal piezoelectric signals from the transducer to increase the weight of the high-frequency components, which improved the lateral resolution, and to broaden the spectrum of the signal, which enhanced the axial resolution.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.429294DOIArticle
ORCID:
AuthorORCID
Xu, Yuan0000-0001-9326-2197
Wang, Lihong V.0000-0001-9783-4383
Additional Information:© 2001 Society of Photo-Optical Instrumentation Engineers (SPIE). We thank G. Ku for experimental assistance. 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:microwave, ultrasonics, thermoacoustics, tomography, resolution, filter
Series Name:Proceedings of SPIE
Issue or Number:4256
Record Number:CaltechAUTHORS:20181207-161547686
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20181207-161547686
Official Citation:Yuan Xu, Lihong V. Wang, "Signal processing in microwave-induced thermoacoustic tomography," Proc. SPIE 4256, Biomedical Optoacoustics II, (15 June 2001); doi: 10.1117/12.429294
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91600
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:10 Dec 2018 23:22
Last Modified:03 Oct 2019 20:36

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