Simple instrument for the chracterization of diffuse reflectance

Giardini, Mario E. and Loconte, Laura and Guizzetti, Giovanni Guidoi and Gelmetti, Andrea and Lago, Paolo; Bigio, Irving J. and Schneckenburger, Herbert and Slavik, Jan and Svanberg, Katarina and Viallet, Pierre M., eds. (1999) Simple instrument for the chracterization of diffuse reflectance. In: Proceedings of SPIE. Proceedings of SPIE, 3568 . SPIE, SWE, pp. 59-63. ISBN 9780819430304 (https://doi.org/10.1117/12.336818)

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Abstract

An apparatus for the measurement ofthe radial dependence ofthe continuous-wave diffuse reflectance ofa tissue is described. It consists in a probe, which is applied on the tissue, and a detection unit. By employing an array of incoherent semiconductor light sources (LED's) and continuous-wave detection, probe structure is considerably simpler than other devices described in literature, allowing moreover an efficient coupling of the emitted light towards the tissue. The high responsivity so obtained permits fast and accurate measurements. Measurement speed, probe compactness and accuracy are potentially sufficient for the in-vivo application of the method to surgically exposed tissue. A preliminary set of data, measured on a scattering phantom and on non-exposed in-vivo tissue, is presented. Even though available models fitted to the measured data give the correct order of magnitude for light transport coefficients, in order to extract reliable absolute values they should be corrected for probe nonidealities. The availability of extensive high-quality in-vivo data is to this regard stimulating for further theoretical investigations.

  • Item type:Book Section
    ID code:47621
    Dates:
    Date
    Event
    19 January 1999
    Published
    12 September 1998
    Published Online
    Notes:© 1999 Society of Photo Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, and modification of the contents of the publication are prohibited.
    Subjects:Technology > Engineering (General). Civil engineering (General) > Bioengineering
    Science > Physics > Optics. Light
    Department:Faculty of Engineering > Biomedical Engineering
    Depositing user: Pure Administrator
    Date deposited:24 Apr 2014 08:59
    Last modified:08 Apr 2024 13:09
    URI:https://strathprints.strath.ac.uk/id/eprint/47621
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