In situ local tissue characterization and imaging by backscattering acousto-optic imaging
We use an imaging system taking advantage of a focused ultrasonic field to mark the photon trajectories in a biological sample by modulating the optical paths in the focal zone. We show the applicability of this setup to various geometrical configurations, such as forward and backward scattering. Th...
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| Veröffentlicht in: | Optics communications 2001-09, Vol.196 (1), p.127-131 |
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| container_issue | 1 |
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| container_title | Optics communications |
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| creator | Lévêque-Fort, Sandrine Selb, Juliette Pottier, Lionel Boccara, Albert Claude |
| description | We use an imaging system taking advantage of a focused ultrasonic field to mark the photon trajectories in a biological sample by modulating the optical paths in the focal zone. We show the applicability of this setup to various geometrical configurations, such as forward and backward scattering. The modulated speckle detected on a CCD camera reflects, after parallel processing, the local optical properties of the tissue in the focal zone. We propose to use the backscattering geometry to estimate the local
effective attenuation coefficient. Finally we compare images which have been obtained through several centimeters of biological tissue, both in forward and in backward geometry. |
| doi_str_mv | 10.1016/S0030-4018(01)01364-5 |
| format | Article |
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| ispartof | Optics communications, 2001-09, Vol.196 (1), p.127-131 |
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| language | eng |
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| source | Access via ScienceDirect (Elsevier) |
| subjects | Acousto-optic imaging Acousto-optical devices Biological and medical sciences Biological tissues CCD camera Exact sciences and technology Fundamental and applied biological sciences. Psychology Fundamental areas of phenomenology (including applications) General aspects, investigation technics, apparatus Medical imaging: general Optical elements, devices, and systems Optics Physics Speckle Tissues, organs and organisms biophysics |
| title | In situ local tissue characterization and imaging by backscattering acousto-optic imaging |
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