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Journal of Biomedical Optics

Parallel acoustic delay lines for photoacoustic tomography
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Paper Abstract

Achieving real-time photoacoustic (PA) tomography typically requires multi-element ultrasound transducer arrays and their associated multiple data acquisition (DAQ) electronics to receive PA waves simultaneously. We report the first demonstration of a photoacoustic tomography (PAT) system using optical fiber-based parallel acoustic delay lines (PADLs). By employing PADLs to introduce specific time delays, the PA signals (on the order of a few micro seconds) can be forced to arrive at the ultrasonic transducers at different times. As a result, time-delayed PA signals in multiple channels can be ultimately received and processed in a serial manner with a single-element transducer, followed by single-channel DAQ electronics. Our results show that an optically absorbing target in an optically scattering medium can be photoacoustically imaged using the newly developed PADL-based PAT system. Potentially, this approach could be adopted to significantly reduce the complexity and cost of ultrasonic array receiver systems.

Paper Details

Date Published: 7 November 2012
PDF: 7 pages
J. Biomed. Opt. 17(11) 116019 doi: 10.1117/1.JBO.17.11.116019
Published in: Journal of Biomedical Optics Volume 17, Issue 11
Show Author Affiliations
Murat Kaya Yapici, Khalifa Univ. of Science, Technology and Research (United Arab Emirates)
Chulhong Kim, Univ. at Buffalo (United States)
Cheng-Chung Chang, Texas A&M Univ. (United States)
Mansik Jeon, Univ. at Buffalo (United States)
Zijian Guo, Washington Univ. in St. Louis (United States)
Xin Cai, Washington Univ. in St. Louis (United States)
Jun Zou, Texas A&M Univ. (United States)
Lihong V. Wang, Washington Univ. in St. Louis (United States)


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