Share Email Print
cover

Proceedings Paper

High-contrast FFT acousto-optical tomography of biological tissues with a frequency-chirped modulation of the ultrasound
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Although tumors can show important contrast in their optical properties at an early stage of development, they are difficult to image optically due the diffusive nature of biological tissues. Such tumors can also be detected by "classical" ultrasound (US) imaging, but the acoustic constrast is often weak at early stages. Acousto-optical (AO) imaging combines light and ultrasound : light carries the desired information and ultrasound provides the spatial resolution. Based on a previous work made by the group of L.V. Wang, we present AO images obtained with chirped US. This modulation of the US frequency allows to encode a spatial region of the medium in the frequency spectrum of the AO signal. We can then obtain the optical contrast along the US path with improved resolution. The technique was apply to the imaging of buried objects in phantoms and to the vizualization of the "virtual source".

Paper Details

Date Published: 1 July 2003
PDF: 9 pages
Proc. SPIE 4960, Biomedical Optoacoustics IV, (1 July 2003); doi: 10.1117/12.477642
Show Author Affiliations
Benoit Claude Forget, ESPCI, CNRS (France)
Univ. Pierre et Marie Curie (France)
Michael Atlan, ESPCI, CNRS (France)
Univ. Pierre et Marie Curie (France)
Juliette Selb, ESPCI, CNRS (France)
Univ. Pierre et Marie Curie (France)
Lionel Pottier, ESPCI, CNRS (France)
Univ. Pierre et Marie Curie (France)
Francois Ramaz, ESPCI, CNRS (France)
Univ. Pierre et Marie Curie (France)
Albert Claude Boccara, ESPCI, CNRS (France)
Univ. Pierre et Marie Curie (France)


Published in SPIE Proceedings Vol. 4960:
Biomedical Optoacoustics IV
Alexander A. Oraevsky, Editor(s)

© SPIE. Terms of Use
Back to Top