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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 2 — Jan. 10, 2010
  • pp: 142–152

Design and validation of a clinical instrument for spectral diagnosis of cutaneous malignancy

Narasimhan Rajaram, Timothy J. Aramil, Kelvin Lee, Jason S. Reichenberg, Tri H. Nguyen, and James W. Tunnell  »View Author Affiliations


Applied Optics, Vol. 49, Issue 2, pp. 142-152 (2010)
http://dx.doi.org/10.1364/AO.49.000142


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Abstract

We report a probe-based portable and clinically compatible instrument for the spectral diagnosis of melanoma and nonmelanoma skin cancers. The instrument combines two modalities—diffuse reflectance and intrinsic fluorescence spectroscopy—to provide complementary information regarding tissue morphology, function, and biochemical composition. The instrument provides a good signal-to-noise ratio for the collected reflectance and laser-induced fluorescence spectra. Validation experiments on tissue phantoms over a physiologically relevant range of albedos ( 0.35 0.99 ) demonstrate an accuracy of close to 10% in determining scattering, absorption and fluorescence characteristics. We also demonstrate the ability of our instrument to collect in vivo diffuse reflectance and fluorescence measurements from clinically normal skin, dysplastic nevus, and malignant nonmelanoma skin cancer.

© 2010 Optical Society of America

OCIS Codes
(170.1870) Medical optics and biotechnology : Dermatology
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(170.6510) Medical optics and biotechnology : Spectroscopy, tissue diagnostics

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: June 3, 2009
Revised Manuscript: October 4, 2009
Manuscript Accepted: December 3, 2009
Published: January 7, 2010

Virtual Issues
Vol. 5, Iss. 3 Virtual Journal for Biomedical Optics

Citation
Narasimhan Rajaram, Timothy J. Aramil, Kelvin Lee, Jason S. Reichenberg, Tri H. Nguyen, and James W. Tunnell, "Design and validation of a clinical instrument for spectral diagnosis of cutaneous malignancy," Appl. Opt. 49, 142-152 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-2-142

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