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Proceedings Paper

Evidence of a millimeter size virtual light source for acousto-optical tomography in scattering media using a chirp modulation of the ultrasound
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Paper Abstract

The Acousto-optical imaging technique in scattering media can be explained by using the concept of a virtual light source moving inside the medium. Its emission depends on the local optical properties of the insonified area, making it an interesting candidate for in-depth tissue (several centimeters)probing. Evidence of this statement in the restrictive case of a chirp-reduced-size virtual source is shown using a technique that records a film during one chirp modulation of the imaging system. A Fast Fourier Transform treatment correlates the Fourier spectrum of time-sampled transmitted light to the position of the source along the ultrasonic beam, revealing its millimetric size.

Paper Details

Date Published: 14 October 2003
PDF: 7 pages
Proc. SPIE 5143, Novel Optical Instrumentation for Biomedical Applications, (14 October 2003); doi: 10.1117/12.499958
Show Author Affiliations
Michael Atlan, Ecole Superieure de Physique et de Chimie Industrielles, CNRS (France)
Francois Ramaz, Ecole Superieure de Physique et de Chimie Industrielles, CNRS (France)
Benoit Claude Forget, Ecole Superieure de Physique et de Chimie Industrielles, CNRS (France)
Albert-Claude Boccara, Ecole Superieure de Physique et de Chimie Industrielles, CNRS (France)


Published in SPIE Proceedings Vol. 5143:
Novel Optical Instrumentation for Biomedical Applications
Albert-Claude Boccara, Editor(s)

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