Analysis of light scattering from human breast tissue using a custom dual-optical scanning near-field optical microscope

Kyle, J. R. and Kyle, M. D. and Raghavan, R. and Budak, G. and Ozkan, C. S. and Ozkan, M.. (2011) Analysis of light scattering from human breast tissue using a custom dual-optical scanning near-field optical microscope. Journal of Biophotonics, 4 (3). pp. 193-205.

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Abstract

In this paper we introduce a custom scanning near-field optical microscope (SNOM) that simultaneously collects reflection and transmission near-field images along with topography. This dual-optical SNOM uses a bent probe, which allows for axial reflection imaging, accurate surface scanning, and easy identification of topographic artifacts. Using this novel dual-optical SNOM, we image desiccated and non-desiccated human breast epithelial tissue. By comparing the simultaneous SNOM images, we isolate the effects of tissue morphology and variations in refractive indices on the forward- and back-scattering of light from the tissue. We find that the reduction in back-scattering from tissue, relative to the glass slide, is caused by dense packing of the scattering sites in the cytoplasm (morphology) in the desiccated tissue and a thin-film of water adhering to the glass slide (refractive index) in the non-desiccated tissue sample. Our work demonstrates the potential of our customized dual-optical SNOM system for label-free tissue diagnostics.

Item Type: Article
InterNano Taxonomy: Nanomanufacturing Characterization Techniques > Diffraction and Scattering
Collections: Nanomanufacturing Research Collection > Nanomanufacturing Nanoscale Science and Engineering Centers > Center for Hierarchical Manufacturing
Depositing User: Robert Stevens
Date Deposited: 03 May 2012 16:35
Last Modified: 03 May 2012 16:36
URI: http://eprints.internano.org/id/eprint/1769

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