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United States of America Patent
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Aug 11, 2017
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Aug 15, 2016
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Abstract
A miniature quantitative optical coherence elastography system with an integrated Fabry-Perot force sensor for in situ elasticity measurement of biological tissue is provided. The technique has great potential for biomechanics modeling and clinical diagnosis. The qOCE system contains a fiber-optic probe that exerts a compressive force to deform tissue at the tip of the probe. Using the space-division multiplexed optical coherence tomography signal detected by a spectral domain optical coherence tomography engine, probe deformation in proportion to the force applied is quantified, as well as the tissue deformation corresponding to the external stimulus. Simultaneous measurement of force and displacement allows for calculation of Young's modulus from the biological tissue. The provided system has had its effectiveness validated on tissue mimicking phantoms, as well as biological tissues, with the advantages of being minimal invasive and also not requiring the use of external agents or substantial pre-measuring preparation.
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