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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 19, Iss. 9 — Sep. 1, 2002
  • pp: 1823–1831

Fluorescence spectral imaging for characterization of tissue based on multivariate statistical analysis

Jianan Y. Qu, Hanpeng Chang, and Shengming Xiong  »View Author Affiliations


JOSA A, Vol. 19, Issue 9, pp. 1823-1831 (2002)
http://dx.doi.org/10.1364/JOSAA.19.001823


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Abstract

A novel spectral imaging method for the classification of light-induced autofluorescence spectra based on principal component analysis (PCA), a multivariate statistical analysis technique commonly used for studying the statistical characteristics of spectral data, is proposed and investigated. A set of optical spectral filters related to the diagnostically relevant principal components is proposed to process autofluorescence signals optically and generate principal component score images of the examined tissue simultaneously. A diagnostic image is then formed on the basis of an algorithm that relates the principal component scores to tissue pathology. With autofluorescence spectral data collected from nasopharyngeal tissue in vivo, a set of principal component filters was designed to process the autofluorescence signal, and the PCA-based diagnostic algorithms were developed to classify the spectral signal. Simulation results demonstrate that the proposed spectral imaging system can differentiate carcinoma lesions from normal tissue with a sensitivity of 95% and specificity of 93%. The optimal design of principal filters and the optimal selection of PCA-based algorithms were investigated to improve the diagnostic accuracy. The robustness of the spectral imaging method against noise in the autofluorescence signal was studied as well.

© 2002 Optical Society of America

OCIS Codes
(110.7050) Imaging systems : Turbid media
(170.0170) Medical optics and biotechnology : Medical optics and biotechnology
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(170.6510) Medical optics and biotechnology : Spectroscopy, tissue diagnostics

Citation
Jianan Y. Qu, Hanpeng Chang, and Shengming Xiong, "Fluorescence spectral imaging for characterization of tissue based on multivariate statistical analysis," J. Opt. Soc. Am. A 19, 1823-1831 (2002)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-19-9-1823


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