Thermal coherence tomography: a depth-selective thermophotonic radar imaging technique for demineralization diagnosis in hard dental and bone tissues

N. Tabatabaei; A. Mandelis; M. Dehghany; K. H. Michaelian

doi:10.1117/12.909019

9 February 2012 Thermal coherence tomography: a depth-selective thermophotonic radar imaging technique for demineralization diagnosis in hard dental and bone tissues

N. Tabatabaei, A. Mandelis, M. Dehghany, K. H. Michaelian

Author Affiliations +

Proceedings Volume 8207, Photonic Therapeutics and Diagnostics VIII; 82076O (2012) https://doi.org/10.1117/12.909019
Event: SPIE BiOS, 2012, San Francisco, California, United States

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.

Citation Download Citation

N. Tabatabaei, A. Mandelis, M. Dehghany, and K. H. Michaelian "Thermal coherence tomography: a depth-selective thermophotonic radar imaging technique for demineralization diagnosis in hard dental and bone tissues", Proc. SPIE 8207, Photonic Therapeutics and Diagnostics VIII, 82076O (9 February 2012); https://doi.org/10.1117/12.909019

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