CONFERENCE PROCEEDINGS
Advanced Search
Home > Journals > J. Biomed. Opt. > Volume 22 > Issue 4 > Article
Open Access
7 March 2017 Mitigation of artifacts due to isolated acoustic heterogeneities in photoacoustic computed tomography using a variable data truncation-based reconstruction method
Joemini Poudel, Thomas P. Matthews, Lei Li, Mark A. Anastasio, Lihong V. Wang
Author Affiliations +
Journal of Biomedical Optics, Vol. 22, Issue 4, 041018 (March 2017). https://doi.org/10.1117/1.JBO.22.4.041018
Abstract
Photoacoustic computed tomography (PACT) is an emerging computed imaging modality that exploits optical contrast and ultrasonic detection principles to form images of the absorbed optical energy density within tissue. If the object possesses spatially variant acoustic properties that are unaccounted for by the reconstruction method, the estimated image can contain distortions. While reconstruction methods have recently been developed to compensate for this effect, they generally require the object’s acoustic properties to be known a priori. To circumvent the need for detailed information regarding an object’s acoustic properties, we previously proposed a half-time reconstruction method for PACT. A half-time reconstruction method estimates the PACT image from a data set that has been temporally truncated to exclude the data components that have been strongly aberrated. However, this method can be improved upon when the approximate sizes and locations of isolated heterogeneous structures, such as bones or gas pockets, are known. To address this, we investigate PACT reconstruction methods that are based on a variable data truncation (VDT) approach. The VDT approach represents a generalization of the half-time approach, in which the degree of temporal truncation for each measurement is determined by the distance between the corresponding ultrasonic transducer location and the nearest known bone or gas void location. Computer-simulated and experimental data are employed to demonstrate the effectiveness of the approach in mitigating artifacts due to acoustic heterogeneities.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE) 1083-3668/2017/$25.00 © 2017 SPIE
Citation Download Citation
Joemini Poudel, Thomas P. Matthews, Lei Li, Mark A. Anastasio, and Lihong V. Wang "Mitigation of artifacts due to isolated acoustic heterogeneities in photoacoustic computed tomography using a variable data truncation-based reconstruction method," Journal of Biomedical Optics 22(4), 041018 (7 March 2017). https://doi.org/10.1117/1.JBO.22.4.041018
Received: 29 August 2016; Accepted: 17 February 2017; Published: 7 March 2017
JOURNAL ARTICLE
 9 PAGES
DOWNLOAD PAPER SAVE TO MY LIBRARY
GET CITATION
Lens.org Logo
CITATIONS
Cited by 24 scholarly publications.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Acoustics
Photoacoustic tomography
Reconstruction algorithms
Transducers
Tissue optics
Image restoration
Bone
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top