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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 2, Iss. 12 — Dec. 1, 2011
  • pp: 3295–3308

Quantification of cellular autofluorescence of human skin using multiphoton tomography and fluorescence lifetime imaging in two spectral detection channels

Rakesh Patalay, Clifford Talbot, Yuriy Alexandrov, Ian Munro, Mark A. A. Neil, Karsten König, Paul M. W. French, Anthony Chu, Gordon W. Stamp, and Chris Dunsby  »View Author Affiliations


Biomedical Optics Express, Vol. 2, Issue 12, pp. 3295-3308 (2011)
http://dx.doi.org/10.1364/BOE.2.003295


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Abstract

We explore the diagnostic potential of imaging endogenous fluorophores using two photon microscopy and fluorescence lifetime imaging (FLIM) in human skin with two spectral detection channels. Freshly excised benign dysplastic nevi (DN) and malignant nodular Basal Cell Carcinomas (nBCCs) were excited at 760 nm. The resulting fluorescence signal was binned manually on a cell by cell basis. This improved the reliability of fitting using a double exponential decay model and allowed the fluorescence signatures from different cell populations within the tissue to be identified and studied. We also performed a direct comparison between different diagnostic groups. A statistically significant difference between the median mean fluorescence lifetime of 2.79 ns versus 2.52 ns (blue channel, 300-500 nm) and 2.08 ns versus 1.33 ns (green channel, 500-640 nm) was found between nBCCs and DN respectively, using the Mann-Whitney U test (p < 0.01). Further differences in the distribution of fluorescence lifetime parameters and inter-patient variability are also discussed.

© 2011 OSA

OCIS Codes
(170.1870) Medical optics and biotechnology : Dermatology
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.6510) Medical optics and biotechnology : Spectroscopy, tissue diagnostics
(170.6920) Medical optics and biotechnology : Time-resolved imaging
(300.6410) Spectroscopy : Spectroscopy, multiphoton
(180.4315) Microscopy : Nonlinear microscopy

ToC Category:
Dermatological Applications

History
Original Manuscript: August 30, 2011
Revised Manuscript: October 7, 2011
Manuscript Accepted: October 13, 2011
Published: November 10, 2011

Citation
Rakesh Patalay, Clifford Talbot, Yuriy Alexandrov, Ian Munro, Mark A. A. Neil, Karsten König, Paul M. W. French, Anthony Chu, Gordon W. Stamp, and Chris Dunsby, "Quantification of cellular autofluorescence of human skin using multiphoton tomography and fluorescence lifetime imaging in two spectral detection channels," Biomed. Opt. Express 2, 3295-3308 (2011)
http://www.opticsinfobase.org/boe/abstract.cfm?URI=boe-2-12-3295


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