CaltechAUTHORS
  A Caltech Library Service

Compensation for acoustic heterogeneities in photoacoustic computed tomography using a variable temporal data truncation reconstruction method

Poudel, Joemini and Matthews, Thomas P. and Anastasio, Mark A. and Wang, Lihong V. (2016) Compensation for acoustic heterogeneities in photoacoustic computed tomography using a variable temporal data truncation reconstruction method. In: Photons Plus Ultrasound: Imaging and Sensing 2016. Proceedings of SPIE. No.9708. Society of Photo-Optical Instrumentation Engineers , Bellingham, WA, Art. No. 97083W. ISBN 9781628419429. https://resolver.caltech.edu/CaltechAUTHORS:20180911-143330495

[img] PDF - Published Version
See Usage Policy.

458Kb

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20180911-143330495

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 algorithm, the estimated image can contain distortions. While reconstruction algorithms have recently been developed for compensating for this effect, they generally require the objects acoustic properties to be known a priori. To circumvent the need for detailed information regarding an objects acoustic properties, we have 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. In this approach, the degree of temporal truncation is the same for all measurements. However, this strategy can be improved upon it when the approximate sizes and locations of strongly heterogeneous structures such as gas voids or bones are known. In this work, we investigate PACT reconstruction algorithms that are based on a variable temporal data truncation (VTDT) approach that represents a generalization of the half-time reconstruction approach. In the VTDT approach, the degree of temporal truncation for each measurement is determined by the distance between the corresponding transducer location and the nearest known bone or gas void location. Reconstructed images from a numerical phantom is employed to demonstrate the feasibility and effectiveness of the approach.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.2213416DOIArticle
ORCID:
AuthorORCID
Anastasio, Mark A.0000-0002-3192-4172
Wang, Lihong V.0000-0001-9783-4383
Additional Information:© 2016 Society of Photo-Optical Instrumentation Engineers.
Subject Keywords:photoacoustic computed tomography, image reconstruction
Series Name:Proceedings of SPIE
Issue or Number:9708
Record Number:CaltechAUTHORS:20180911-143330495
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180911-143330495
Official Citation:Joemini Poudel, Joemini Poudel, Thomas P. Matthews, Thomas P. Matthews, Mark A. Anastasio, Mark A. Anastasio, Lihong V. Wang, Lihong V. Wang, } "Compensation for acoustic heterogeneities in photoacoustic computed tomography using a variable temporal data truncation reconstruction method", Proc. SPIE 9708, Photons Plus Ultrasound: Imaging and Sensing 2016, 97083W (15 March 2016); doi: 10.1117/12.2213416; https://doi.org/10.1117/12.2213416
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:89529
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:11 Sep 2018 23:19
Last Modified:03 Oct 2019 20:17

Repository Staff Only: item control page