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Proceedings Paper

Photoacoustic imaging with rotational compounding for improved signal detection
Author(s): A. Forbrich; A. Heinmiller; J. Jose; A. Needles; D. Hirson
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Paper Abstract

Photoacoustic microscopy with linear array transducers enables fast two-dimensional, cross-sectional photoacoustic imaging. Unfortunately, most ultrasound transducers are only sensitive to a very narrow angular acceptance range and preferentially detect signals along the main axis of the transducer. This often limits photoacoustic microscopy from detecting blood vessels which can extend in any direction. Rotational compounded photoacoustic imaging is introduced to overcome the angular-dependency of detecting acoustic signals with linear array transducers. An integrate system is designed to control the image acquisition using a linear array transducer, a motorized rotational stage, and a motorized lateral stage. Images acquired at multiple angular positions are combined to form a rotational compounded image. We found that the signal-to-noise ratio improved, while the sidelobe and reverberation artifacts were substantially reduced. Furthermore, the rotational compounded images of excised kidneys and hindlimb tumors of mice showed more structural information compared with any single image collected.

Paper Details

Date Published: 11 March 2015
PDF: 5 pages
Proc. SPIE 9323, Photons Plus Ultrasound: Imaging and Sensing 2015, 932330 (11 March 2015); doi: 10.1117/12.2080207
Show Author Affiliations
A. Forbrich, FUJIFILM VisualSonics Inc. (Canada)
A. Heinmiller, FUJIFILM VisualSonics Inc. (Canada)
J. Jose, FUJIFILM VisualSonics Inc. (Netherlands)
A. Needles, FUJIFILM VisualSonics Inc. (Canada)
D. Hirson, FUJIFILM VisualSonics Inc. (Canada)

Published in SPIE Proceedings Vol. 9323:
Photons Plus Ultrasound: Imaging and Sensing 2015
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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