Experimental study of spatial resolution for time-resolved near-infrared imaging

K. J. Carson; Yappa A.B.D. Wickramasinghe; Peter J. Rolfe

doi:10.1117/12.167461

1 February 1994 Experimental study of spatial resolution for time-resolved near-infrared imaging

K. J. Carson, Yappa A.B.D. Wickramasinghe, Peter J. Rolfe

Proceedings Volume 2082, Quantification and Localization Using Diffuse Photons in a Highly Scattering Medium; (1994) https://doi.org/10.1117/12.167461
Event: Europto Biomedical Optics '93, 1993, Budapest, Hungary

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.

Citation Download Citation

K. J. Carson, Yappa A.B.D. Wickramasinghe, and Peter J. Rolfe "Experimental study of spatial resolution for time-resolved near-infrared imaging", Proc. SPIE 2082, Quantification and Localization Using Diffuse Photons in a Highly Scattering Medium, (1 February 1994); https://doi.org/10.1117/12.167461

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