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Analytic explanation of spatial resolution related to bandwidth and detector aperture size in thermoacoustic or photoacoustic reconstruction

Xu, Minghua and Wang, Lihong V. (2003) Analytic explanation of spatial resolution related to bandwidth and detector aperture size in thermoacoustic or photoacoustic reconstruction. Physical Review E, 67 (5). Art. No. 056605. ISSN 1063-651X. http://resolver.caltech.edu/CaltechAUTHORS:20160711-155756395

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Abstract

An analytic explanation of the spatial resolution in thermoacoustic or photoacoustic reconstruction is presented. Three types of specific recording geometries, including spherical, planar, and cylindrical surface, as well as other general cases, are investigated. Analytic expressions of the point-spread functions (PSF’s), as a function of the bandwidth of the measurement system and the finite size of the detector aperture, are derived based on rigorous reconstruction formulas. The analyses clearly reveal that the dependence of the PSF’s on the bandwidth of all recording geometries shares the same space-invariant expression while the dependence on the aperture size of the detector differs. The bandwidth affects both axial and lateral resolutions; in contrast, the detector aperture blurs the lateral resolution greatly but the axial resolution only slightly.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevE.67.056605DOIArticle
http://journals.aps.org/pre/abstract/10.1103/PhysRevE.67.056605PublisherArticle
ORCID:
AuthorORCID
Wang, Lihong V.0000-0001-9783-4383
Additional Information:© 2003 The American Physical Society. Received 31 October 2002; published 9 May 2003. 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 Grant Nos. R21 EB00319-02 and R01 EB000712, the National Science Foundation Grant No. BES-9734491, and the Texas Higher Education Coordinating Board Grant No. ARP 000512-0063-2001.
Funders:
Funding AgencyGrant Number
Army Medical Research and Materiel CommandDAMD17-00-1-0455
NIHR21 EB00319-02
NIHR01 EB000712
NSFBES-9734491
Texas Higher Education Coordinating BoardARP 000512-0063-2001
Record Number:CaltechAUTHORS:20160711-155756395
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160711-155756395
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:68974
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:27 Jul 2016 21:35
Last Modified:27 Jul 2016 21:35

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