Simple instrument for the chracterization of diffuse reflectance

Mario E. Giardini, Laura Loconte, Giovanni Guidoi Guizzetti, Andrea Gelmetti, Paolo Lago

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

2 Citations (Scopus)
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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.
Original languageEnglish
Title of host publicationProceedings of SPIE
Subtitle of host publicationOptical Biopsies and Microscopic Techniques III
EditorsIrving J. Bigio, Herbert Schneckenburger, Jan Slavik, Katarina Svanberg, Pierre M. Viallet
Place of PublicationBellingham, WA
Number of pages5
Publication statusPublished - 19 Jan 1999
EventBiOS Europe 1998 - Stockholm, Sweden
Duration: 8 Sept 199812 Sept 1998

Publication series

NameProceedings of SPIE
PublisherSPIE Press
ISSN (Print)0277-786X


ConferenceBiOS Europe 1998


  • apparatus
  • diffuse reflectance
  • in-vivo
  • LED
  • characterization
  • simple instrument


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