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Proceedings Paper

Characterization of nano sensitive sub-micron scale tissue-structural multifractality and its alteration in tumor progress
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Paper Abstract

Assessment of disease using OCT is an actively investigated problem, owing to many unresolved challenges in early disease detection, diagnosis and treatment response monitoring. The spatial scale to which the information can be obtained from the scattered light is limited by the diffraction limit (~λ/2; λ = wavelength of light is typically in the micron level) and the axial resolution of OCT systems is limited by the inverse of spectral bandwidth. Yet, onset or progression of disease /precancer is typically associated with subtle alterations in the tissue dielectric and its ultra-structural morphology. On the other hand, biological tissue is known to have ultra-structural multifractality. For both the fundamental study of biological processes and early diagnosis of pathological processes, information on the nanoscale in the tissue sub-micron structural morphology is crucial. Therefore, we have developed a novel spectroscopic and label-free 3D OCT system with nanoscale sensitivity in combination of multifractal analysis for extraction and quantification of tissue ultra-structural multifractal parameters. This present approach demonstrated its capability to measure nano-sensitive tissue ultra-structural multifractality. In an initial study, we found that nano-sensitive sub-micron structural multifractality changes in transition from healthy to tumor in pathologically characterized fresh tissue samples. This novel method for extraction of nanosensitive tissue multifractality promises to develop a non-invasive diagnosis tool for early cancer detection.

Paper Details

Date Published: 21 February 2020
PDF: 4 pages
Proc. SPIE 11239, Dynamics and Fluctuations in Biomedical Photonics XVII, 1123912 (21 February 2020);
Show Author Affiliations
Nandan Das, National Univ. of Ireland, Galway (Ireland)
Sergey Alexandrov, National Univ. of Ireland, Galway (Ireland)
Róisín M. Dwyer, National Univ. of Ireland, Galway (Ireland)
Rolf Saager, Linköping Univ. (Sweden)
Nirmalya Ghosh, Indian Institute of Science Education and Research Kolkata (India)
Martin Leahy, National Univ. of Ireland, Galway (Ireland)
Institute of Photonic Sciences (ICFO) (Spain)


Published in SPIE Proceedings Vol. 11239:
Dynamics and Fluctuations in Biomedical Photonics XVII
Valery V. Tuchin; Martin J. Leahy; Ruikang K. Wang, Editor(s)

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