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Proceedings Paper

Time-resolved image contrast of spheres embedded in highly scattering media
Author(s): Jeremy C. Hebden
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Paper Abstract

A study has been performed of the image contrast produced by small spheres embedded in a homogenous highly scattering medium. The scattering medium consisted of a suspension of uniform latex microspheres, and the spheres situated at various depths in the medium were either transparent or totally opaque. The imaging technique involved measuring and discriminating between the flight times of transmitted photons. The principal components of the imaging system are a picosecond laser and a streak camera. A beam of pulses was translated in two dimensions across a vertical surface of the medium while the camera measured the temporal distribution of light collected from a point on the opposite surface. Images are presented which were generated using transmitted light integrated over steadily increasing periods of time. The contrast produced by each type of sphere was evaluated as a function of the period of time over which the transmitted light was integrated.

Paper Details

Date Published: 14 September 1993
PDF: 6 pages
Proc. SPIE 1888, Photon Migration and Imaging in Random Media and Tissues, (14 September 1993); doi: 10.1117/12.154655
Show Author Affiliations
Jeremy C. Hebden, Univ. College London (United Kingdom)

Published in SPIE Proceedings Vol. 1888:
Photon Migration and Imaging in Random Media and Tissues
Britton Chance; Robert R. Alfano, Editor(s)

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