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Proceedings Paper

Experimental study of spatial resolution for time-resolved near-infrared imaging
Author(s): K. J. Carson; Yappa A.B.D. Wickramasinghe; Peter J. Rolfe
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Paper Abstract

A preliminary study into the spatial resolution that may be achieved for time resolved near infrared imaging through highly scattering media has been performed. The spatial resolution, for time gated images, has been investigated quantitatively by measuring the edge-spread function for scattering media of different properties and at different depths. Transmission scans of two absorbing rods, spaced by different distances, were used to qualitatively study the contrast obtained at different integration periods or using the measured mean time-of-flight. Both spatial resolution and contrast are improved as the time gating interval is reduced. However, for thick tissue sections it may not be possible to reduce the spatial resolution below about 10 mm, because of the small amount of light arriving at these early times.

Paper Details

Date Published: 1 February 1994
PDF: 10 pages
Proc. SPIE 2082, Quantification and Localization Using Diffuse Photons in a Highly Scattering Medium, (1 February 1994); doi: 10.1117/12.167461
Show Author Affiliations
K. J. Carson, Univ. of Keele (United Kingdom)
Yappa A.B.D. Wickramasinghe, Univ. of Keele (United Kingdom)
Peter J. Rolfe, Univ. of Keele (United Kingdom)

Published in SPIE Proceedings Vol. 2082:
Quantification and Localization Using Diffuse Photons in a Highly Scattering Medium
Britton Chance; David T. Delpy; Marco Ferrari; Martin J. C. van Gemert; Gerhard J. Mueller; Valery V. Tuchin, Editor(s)

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