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Proceedings Paper

Optoacoustic imaging system with improved collection efficiency
Author(s): Dmitri Tsyboulski; André Conjusteau; Sergey A. Ermilov; Hans-Peter F. Brecht; Anton Liopo; Richard Su; Vyacheslav Nadvoretsky; Alexander A. Oraevsky
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Paper Abstract

We introduce a novel experimental design for non-invasive scanning optoacoustic microscopy that utilizes a parabolic surface for ultrasound focusing. We demonstrate that off-axis parabolic mirrors made of sufficiently high acoustic impedance materials work as ideal reflectors in a wide range of apertures and provide lossless conversion of a spherical acoustic wavefront into a plane wave. We further test the performance of a custom optoacoustic imaging setup which was developed and built based on these principles. The achieved resolution limit of 0.3 mm, with NA of 0.5 and the transducer bandwidth of 5 MHz, matches the resolution limit defined by diffraction. Although further improvements of current experimental setup are required to achieve resolution similar to leading microscopy systems, this proof-of-concept work demonstrates the viability of the proposed design for optoacoustic microscopy applications.

Paper Details

Date Published: 11 April 2011
PDF: 8 pages
Proc. SPIE 7899, Photons Plus Ultrasound: Imaging and Sensing 2011, 78991D (11 April 2011); doi: 10.1117/12.877723
Show Author Affiliations
Dmitri Tsyboulski, TomoWave Labs., Inc. (United States)
André Conjusteau, TomoWave Labs., Inc. (United States)
Sergey A. Ermilov, TomoWave Labs., Inc. (United States)
Hans-Peter F. Brecht, TomoWave Labs., Inc. (United States)
Anton Liopo, TomoWave Labs., Inc. (United States)
Richard Su, TomoWave Labs., Inc. (United States)
Vyacheslav Nadvoretsky, TomoWave Labs., Inc. (United States)
Alexander A. Oraevsky, TomoWave Labs., Inc. (United States)

Published in SPIE Proceedings Vol. 7899:
Photons Plus Ultrasound: Imaging and Sensing 2011
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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