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Proceedings Paper

Influence of illumination position on image contrast in epi-optoacoustic imaging of human volunteers
Author(s): Stefan Preisser; Gerrit Held; Sara Peeters; Michael Jaeger; Martin Frenz
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Paper Abstract

In a multi-modal combination of optoacoustic (OA) and pulse-echo ultrasound (US) imaging, epi-mode irradiation with the irradiation optics integrated with the acoustic probe has the advantage of flexible clinical application on any part of the body that is already accessible to US. In epi-mode strong clutter limits the OA imaging depth to often around one centimetre. We investigated clutter in automated scanning of volunteer forearms using a real-time combined OA and US system. The results agree well with our theory that clutter arises from strong optical absorption at the location of tissue illumination. As a consequence, we show that an intermediate separation distance between imaging plane and irradiation region leads to superior OA image contrast compared to an irradiation close to the imaging plane.

Paper Details

Date Published: 3 March 2014
PDF: 4 pages
Proc. SPIE 8943, Photons Plus Ultrasound: Imaging and Sensing 2014, 894346 (3 March 2014); doi: 10.1117/12.2058126
Show Author Affiliations
Stefan Preisser, Univ. Bern (Switzerland)
Gerrit Held, Univ. Bern (Switzerland)
Sara Peeters, Univ. Bern (Switzerland)
Michael Jaeger, Univ. Bern (Switzerland)
Martin Frenz, Univ. Bern (Switzerland)

Published in SPIE Proceedings Vol. 8943:
Photons Plus Ultrasound: Imaging and Sensing 2014
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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