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Proceedings Paper

Optoacoustic microscopy system based on an off-axis parabolic reflector
Author(s): Dmitri Tsyboulski; André Conjusteau; Alexander A. Oraevsky
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Paper Abstract

In this report we introduce a novel experimental design for non-invasive scanning optoacoustic microscopy that utilizes an off-axis parabolic mirror. Such reflector provides ideal and lossless conversion of a spherical wavefront into a plane wave and enables diffraction-limited ultrasound focusing. We have designed and build a custom broadband transducer with 0-19 MHz bandwidth and nominal sensitivity of 15 μV/Pa. With 17 dB amplification and noise level of ~ 1.6 mV the estimated sensitivity limit of our experimental setup is 15 Pa. Using the reflector with numerical aperture of 0.5, we have demonstrated lateral resolution limit of ~ 100 micrometers in test phantoms.

Paper Details

Date Published: 23 February 2012
PDF: 6 pages
Proc. SPIE 8223, Photons Plus Ultrasound: Imaging and Sensing 2012, 82230Z (23 February 2012); doi: 10.1117/12.911015
Show Author Affiliations
Dmitri Tsyboulski, TomoWave Labs., Inc. (United States)
André Conjusteau, TomoWave Labs., Inc. (United States)
Alexander A. Oraevsky, TomoWave Labs., Inc. (United States)

Published in SPIE Proceedings Vol. 8223:
Photons Plus Ultrasound: Imaging and Sensing 2012
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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