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Title: Use of acoustic reflector to make a compact photoacoustic tomography system
Authors: Kalva, Sandeep Kumar
Pramanik, Manojit
Keywords: Acoustic reflector
Photoacoustic tomography
Issue Date: 2017
Source: Kalva, S. K., & Pramanik, M. (2017). Use of acoustic reflector to make a compact photoacoustic tomography system. Journal of Biomedical Optics, 22(2), 026009-.
Series/Report no.: Journal of Biomedical Optics
Abstract: A typical photoacoustic tomography (PAT) system uses a Q-switched Nd:YAG laser for irradiating the sample and a single-element ultrasound transducer (UST) for acquiring the photoacoustic data. Conventionally, in PAT systems, the UST is held in a horizontal position and moved in a circular motion around the sample in full 2π2π radians. Horizontal positioning of the UST requires a large water tank to house, and load on the motor is also high. To overcome this limitation, we used the UST in the vertical plane instead of the horizontal plane. The photoacoustic (PA) waves generated from the sample are directed to the detector surface using an acoustic reflector placed at 45 deg to the transducer body. Hence, we can reduce the scanning radius, which, in turn, will reduce the size of the water tank and load on the motor, and the overall conventional PAT system size can be minimized. In this work, we demonstrate that with this system configuration, we acquire nearly similar images for phantom and in vivo data as that of the conventional PAT system using both flat and focused USTs.
ISSN: 1083-3668
DOI: 10.1117/1.JBO.22.2.026009
Schools: School of Chemical and Biomedical Engineering 
Rights: © 2017 Society of Photo-Optical Instrumentation Engineers (SPIE). This paper was published in Journal of Biomedical Optics and is made available as an electronic reprint (preprint) with permission of SPIE. The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCBE Journal Articles

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