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Differing self-similarity in light scattering spectra: a potential tool for pre-cancer detectionSayantan Ghosh, Jalpa Soni, Harsh Purwar, Jaidip Jagtap, Asima Pradhan, Nirmalya Ghosh, and Prasanta K. Panigrahi »View Author Affiliations
Sayantan Ghosh,1
Jalpa Soni,2
Harsh Purwar,2
Jaidip Jagtap,3
Asima Pradhan,3
Nirmalya Ghosh,2,*
and Prasanta K. Panigrahi2
1School of Physics, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa 2Dept. of Physical Sciences, Indian Institute of Science Education and Research Kolkata (IISER-K), P.O. BCKV Campus Main Office, Mohanpur 741 252, India 3Dept. of Physics, Indian Institute of Technology Kanpur (IIT-K) 208 017, India *Corresponding author: nghosh@iiserkol.ac.in |
Optics Express, Vol. 19, Issue 20, pp. 19717-19730 (2011)
http://dx.doi.org/10.1364/OE.19.019717
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Abstract
The fluctuations in the elastic light scattering spectra of normal and dysplastic human cervical tissues analyzed through wavelet transform based techniques reveal clear signatures of self-similar behavior in the spectral fluctuations. The values of the scaling exponent observed for these tissues indicate the differences in the self-similarity for dysplastic tissues and their normal counterparts. The strong dependence of the elastic light scattering on the size distribution of the scatterers manifests in the angular variation of the scaling exponent. Interestingly, the spectral fluctuations in both these tissues showed multi-fractality (non-stationarity in fluctuations), the degree of multi-fractality being marginally higher in the case of dysplastic tissues. These findings using the multi-resolution analysis capability of the discrete wavelet transform can contribute to the recent surge in the exploration for non-invasive optical tools for pre-cancer detection.
© 2011 OSA
OCIS Codes
(100.7410) Image processing : Wavelets
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(290.0290) Scattering : Scattering
(170.6935) Medical optics and biotechnology : Tissue characterization
ToC Category:
Medical Optics and Biotechnology
History
Original Manuscript: July 14, 2011
Revised Manuscript: August 23, 2011
Manuscript Accepted: August 25, 2011
Published: September 23, 2011
Virtual Issues
Vol. 6, Iss. 10 Virtual Journal for Biomedical Optics
Citation
Sayantan Ghosh, Jalpa Soni, Harsh Purwar, Jaidip Jagtap, Asima Pradhan, Nirmalya Ghosh, and Prasanta K. Panigrahi, "Differing self-similarity in light scattering spectra: a potential tool for pre-cancer detection," Opt. Express 19, 19717-19730 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-20-19717
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- M. Kalashnikov, W. Choi, C.-C. Yu, Y. Sung, R. R. Dasari, K. Badizadegan, and M. S. Feld, “Assessing light scattering of intracellular organelles in single intact living cells,” Opt. Express17, 19674–19681 (2009). [CrossRef] [PubMed]
- W. Choi, C.-C. Yu, C. Fang-Yen, K. Badizadegan, R. R. Dasari, and M. S. Feld, “Field-based angle-resolved light-scattering study of single live cells,” Opt. Lett.33, 1596–1598 (2008). [CrossRef] [PubMed]
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- R. S. Gurjar, V. Backman, L. T. Perelman, I. Georgakoudi, K. Badizadegan, I. Itzkan, R. R. Dasari, and M. S. Feld, “Imaging human epithelial properties with polarized light-scattering spectroscopy,” Nat. Med.7, 1245–1248 (2001). [CrossRef] [PubMed]
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