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Spatial resolution in three-dimensional photo-acoustic reconstruction

Xu, Minghua and Wang, Lihong V. (2004) Spatial resolution in three-dimensional photo-acoustic reconstruction. In: Photons Plus Ultrasound: Imaging and Sensing. Proceedings of SPIE. No.5320. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 264-267. ISBN 9780819452283. http://resolver.caltech.edu/CaltechAUTHORS:20180927-114226532

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Abstract

We present an analytic explanation of the spatial resolution in three-dimensional photo-acoustic (also called opto-acoustic or thermo-acoustic) reconstruction. Based on rigorous reconstruction formulas, we analytically derive the point-spread functions (PSFs) for three types of specific recording geometries, including spherical, planar, and cylindrical surfaces. The PSFs as a function of the bandwidth of the measurement system and the finite size of the detector aperture, as well as the discrete sampling effect on the reconstruction, are investigated. The analyses clearly reveal that the dependence of the PSFs on the bandwidth of all of the 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 resolution; in contrast, the detector aperture blurs the lateral resolution greatly but the axial resolution only slightly. Under-sampling in the measurement causes significant aliasing artifacts in the reconstruction. A general sampling strategy to avoid aliasing is proposed.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.530475DOIArticle
ORCID:
AuthorORCID
Wang, Lihong V.0000-0001-9783-4383
Additional Information:© 2004 Society of Photo-Optical Instrumentation Engineers (SPIE). 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 EB000712 and No. R01 NS46214, the National Science Foundation Grant No. BES-9734491, and Texas Higher Education Coordinating Board Grant No. ARP 000512-0063-2001.
Funders:
Funding AgencyGrant Number
Army Medical Research and Materiel CommandDAMD17-00-1-0455
NIHR01 EB000712
NIHR01 NS46214
NSFBES-9734491
Texas Higher Education Coordinating BoardARP 000512-0063-2001
Subject Keywords:Spatial resolution, Photoacoustic tomography, Reconstruction, Imaging
Record Number:CaltechAUTHORS:20180927-114226532
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20180927-114226532
Official Citation:Minghua Xu, Minghua Xu, Lihong V. Wang, Lihong V. Wang, } "Spatial resolution in three-dimensional photo-acoustic reconstruction", Proc. SPIE 5320, Photons Plus Ultrasound: Imaging and Sensing, (12 July 2004); doi: 10.1117/12.530475; https://doi.org/10.1117/12.530475
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:90026
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:28 Sep 2018 16:16
Last Modified:28 Sep 2018 16:16

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