Simple instrument for the chracterization of diffuse reflectance

Mario Ettore Giardini; Laura Loconte; Giovanni G. Guizzetti; Andrea Gelmetti; Paolo Lago

doi:10.1117/12.336818

Simple instrument for the chracterization of diffuse reflectance

Mario Ettore Giardini, Laura Loconte, Giovanni G. Guizzetti, Andrea Gelmetti, Paolo Lago

Biomedical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

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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.

Original language	English
Title of host publication	Proceedings of SPIE
Subtitle of host publication	Optical Biopsies and Microscopic Techniques III
Editors	Irving J. Bigio, Herbert Schneckenburger, Jan Slavik, Katarina Svanberg, Pierre M. Viallet
Place of Publication	Bellingham, WA
Pages	59-63
Number of pages	5
Volume	3568
DOIs	https://doi.org/10.1117/12.336818
Publication status	Published - 19 Jan 1999
Event	BiOS Europe 1998 - Stockholm, Sweden Duration: 8 Sep 1998 → 12 Sep 1998

Publication series

Name	Proceedings of SPIE
Publisher	SPIE Press
Volume	3568
ISSN (Print)	0277-786X

Conference

Conference	BiOS Europe 1998
Country	Sweden
City	Stockholm
Period	8/09/98 → 12/09/98

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Keywords

apparatus
diffuse reflectance
in-vivo
LED
characterization
simple instrument

Cite this

Giardini, M. E., Loconte, L., Guizzetti, G. G., Gelmetti, A., & Lago, P. (1999). Simple instrument for the chracterization of diffuse reflectance. In I. J. Bigio, H. Schneckenburger, J. Slavik, K. Svanberg, & P. M. Viallet (Eds.), Proceedings of SPIE : Optical Biopsies and Microscopic Techniques III (Vol. 3568, pp. 59-63). (Proceedings of SPIE; Vol. 3568). Bellingham, WA. https://doi.org/10.1117/12.336818

Giardini, Mario Ettore ; Loconte, Laura ; Guizzetti, Giovanni G. ; Gelmetti, Andrea ; Lago, Paolo. / Simple instrument for the chracterization of diffuse reflectance. Proceedings of SPIE : Optical Biopsies and Microscopic Techniques III. editor / Irving J. Bigio ; Herbert Schneckenburger ; Jan Slavik ; Katarina Svanberg ; Pierre M. Viallet. Vol. 3568 Bellingham, WA, 1999. pp. 59-63 (Proceedings of SPIE).

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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 tothe 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.",

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Giardini, ME, Loconte, L, Guizzetti, GG, Gelmetti, A & Lago, P 1999, Simple instrument for the chracterization of diffuse reflectance. in IJ Bigio, H Schneckenburger, J Slavik, K Svanberg & PM Viallet (eds), Proceedings of SPIE : Optical Biopsies and Microscopic Techniques III. vol. 3568, Proceedings of SPIE, vol. 3568, Bellingham, WA, pp. 59-63, BiOS Europe 1998, Stockholm, Sweden, 8/09/98. https://doi.org/10.1117/12.336818

Simple instrument for the chracterization of diffuse reflectance. / Giardini, Mario Ettore; Loconte, Laura; Guizzetti, Giovanni G.; Gelmetti, Andrea; Lago, Paolo.

Proceedings of SPIE : Optical Biopsies and Microscopic Techniques III. ed. / Irving J. Bigio; Herbert Schneckenburger; Jan Slavik; Katarina Svanberg; Pierre M. Viallet. Vol. 3568 Bellingham, WA, 1999. p. 59-63 (Proceedings of SPIE; Vol. 3568).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

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Access to Document

10.1117/12.336818

SPIE Proceedings 3568
Mario E. Giardini ; Laura Loconte ; Giovanni G. Guizzetti ; Andrea Gelmetti and Paolo Lago"Simple instrument for the characterization of diffuse reflectance", Proc. SPIE 3568, Optical Biopsies and Microscopic Techniques III, 59; doi:10.1117/12.336818 Copyright 1999 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. doi:10.1117/12.336818
Final published version, 176 KB

http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=972607