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Toward the discrimination of early melanoma from common and dysplastic nevus using fiber optic diffuse reflectance spectroscopy

Murphy, B.W., Webster, R.J., Turlach, B.A., Quirk, C.J., Clay, C.D., Heenan, P.J. and Sampson, David (2005) Toward the discrimination of early melanoma from common and dysplastic nevus using fiber optic diffuse reflectance spectroscopy Journal of Biomedical Optics, 10 (6).

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Abstract

We describe a study of the discrimination of early melanoma from common and dysplastic nevus using fiber optic diffuse reflectance spectroscopy. Diffuse reflectance spectra in the wavelength range 550 to 1000 nm are obtained using 400-µm core multimode fibers arranged in a six-illumination-around-one- collection geometry with a single fiber-fiber spacing of 470 µm. Spectra are collected at specific locations on 120 pigmented lesions selected by clinicians as possible melanoma, including 64 histopathologically diagnosed as melanoma. These locations are carried through to the histopathological diagnosis, permitting a spatially localized comparison with the corresponding spectrum. The variations in spectra between groups of lesions with different diagnoses are examined and reduced to features suitable for discriminant analysis. A classifier distinguishing between benign and malignant lesions performs with sensitivity/ specificity of between 64/69% and 72/78%. Classifiers between pairs of the group common nevus, dysplastic nevus, in situ melanoma, and invasive melanoma show better or similar performance than the benign/malignant classifier, and analysis provides evidence that different spectral features are needed for each pair of groups. This indicates that multiple discriminant systems are likely to be required to distinguish between melanoma and similar lesions.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences
Faculty of Health and Medical Sciences
Authors :
NameEmailORCID
Murphy, B.W.
Webster, R.J.
Turlach, B.A.
Quirk, C.J.
Clay, C.D.
Heenan, P.J.
Sampson, Davidd.sampson@surrey.ac.uk
Date : 2005
DOI : 10.1117/1.2135799
Uncontrolled Keywords : Diffuse reflectance spectroscopy, Elastic scattering spectroscopy, Melanoma, Skin cancer, Tissue optics, White light spectroscopy, Diffusers (optical), Fiber optics, Histology, Pathology, Reflection, Diffuse reflectance spectroscopy, Elastic scattering spectroscopy, Melanoma, Skin cancer, Tissue optics, White light spectroscopy, Biomedical engineering, algorithm, article, artificial intelligence, automated pattern recognition, computer assisted diagnosis, differential diagnosis, discriminant analysis, dysplastic nevus, equipment, equipment design, evaluation, fiber optics, human, instrumentation, melanoma, methodology, reproducibility, sensitivity and specificity, skin tumor, spectroscopy, validation study, Algorithms, Artificial Intelligence, Diagnosis, Computer-Assisted, Diagnosis, Differential, Discriminant Analysis, Dysplastic Nevus Syndrome, Equipment Design, Equipment Failure Analysis, Fiber Optics, Humans, Melanoma, Pattern Recognition, Automated, Reproducibility of Results, Sensitivity and Specificity, Skin Neoplasms, Spectrum Analysis
Depositing User : Maria Rodriguez-Marquez
Date Deposited : 11 Jun 2018 09:08
Last Modified : 19 Sep 2018 11:32
URI: http://epubs.surrey.ac.uk/id/eprint/846919

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