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International Journal of Biomedical Imaging
Volume 2012, Article ID 206214, 7 pages
http://dx.doi.org/10.1155/2012/206214
Research Article

Compressed Sensing Photoacoustic Imaging Based on Fast Alternating Direction Algorithm

1Sino-Dutch Biomedical and Information Engineering School, Northeastern University, Shenyang, Liaoning 110004, China
2Life Sciences Research Center, School of Life Sciences and Technology, Xidian University, Xi'an, Shaanxi 710071, China
3The College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, Hebei 100124, China
4Intelligent Medical Research Center, Institute of Automation and Chinese Academy of Sciences, Beijing, Hebei 100190, China

Received 29 September 2012; Accepted 10 December 2012

Academic Editor: Hairong Zheng

Copyright © 2012 Xueyan Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Photoacoustic imaging (PAI) has been employed to reconstruct endogenous optical contrast present in tissues. At the cost of longer calculations, a compressive sensing reconstruction scheme can achieve artifact-free imaging with fewer measurements. In this paper, an effective acceleration framework using the alternating direction method (ADM) was proposed for recovering images from limited-view and noisy observations. Results of the simulation demonstrated that the proposed algorithm could perform favorably in comparison to two recently introduced algorithms in computational efficiency and data fidelity. In particular, it ran considerably faster than these two methods. PAI with ADM can improve convergence speed with fewer ultrasonic transducers, enabling a high-performance and cost-effective PAI system for biomedical applications.