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Proceedings Paper

Thermal coherence tomography: a depth-selective thermophotonic radar imaging technique for demineralization diagnosis in hard dental and bone tissues
Author(s): N. Tabatabaei; A. Mandelis; M. Dehghany; K. H. Michaelian
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Paper Abstract

Energy transport in diffusion-wave fields is gradient driven and therefore diffuse, yielding depth-integrated responses with poor axial resolution. Using matched-filter principles, we propose a methodology enabling these parabolic diffusion-wave energy fields to exhibit energy localization akin to propagating hyperbolic wave-fields. This not only improves the axial resolution, but also allows for deconvolution of individual responses of superposed axially discrete sources, opening a new field of depth-resolved subsurface thermal coherence tomography using diffusion waves. The depth resolved nature of the developed methodology is verified through experiments carried out on phantoms and biological samples. The results suggest that thermal coherence tomography can resolve deep structural changes in hard dental and bone tissues. The sensitivity of the developed diagnostic imaging system is compared to that of polarized Raman spectroscopy.

Paper Details

Date Published: 9 February 2012
PDF: 8 pages
Proc. SPIE 8207, Photonic Therapeutics and Diagnostics VIII, 82076O (9 February 2012); doi: 10.1117/12.909019
Show Author Affiliations
N. Tabatabaei, Univ. of Toronto (Canada)
A. Mandelis, Univ. of Toronto (Canada)
M. Dehghany, Natural Resources Canada (Canada)
K. H. Michaelian, Natural Resources Canada (Canada)


Published in SPIE Proceedings Vol. 8207:
Photonic Therapeutics and Diagnostics VIII
Anita Mahadevan-Jansen; Andreas Mandelis; Kenton W. Gregory; Nikiforos Kollias; Hyun Wook Kang; Henry Hirschberg; Melissa J. Suter; Brian Jet-Fei Wong; Justus F. Ilgner; Stephen Lam; Bodo E. Knudsen; Steen Madsen; E. Duco Jansen; Bernard Choi; Guillermo J. Tearney; Laura Marcu; Haishan Zeng; Matthew Brenner; Krzysztof Izdebski, Editor(s)

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