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Proceedings Paper

Probing myocardium biomechanics using quantitative optical coherence elastography
Author(s): Shang Wang; Andrew L. Lopez; Yuka Morikawa; Ge Tao; Jiasong Li; Irina V. Larina; James F. Martin; Kirill V. Larin
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Paper Abstract

We present a quantitative optical coherence elastographic method for noncontact assessment of the myocardium elasticity. The method is based on shear wave imaging optical coherence tomography (SWI-OCT), where a focused air-puff system is used to induce localized tissue deformation through a low-pressure short-duration air stream and a phase-sensitive OCT system is utilized to monitor the propagation of the induced tissue displacement with nanoscale sensitivity. The 1-D scanning of M-mode OCT imaging and the application of optical phase retrieval and mapping techniques enable the reconstruction and visualization of 2-D depth-resolved shear wave propagation in tissue with ultra-high frame rate. The feasibility of this method in quantitative elasticity measurement is demonstrated on tissue-mimicking phantoms with the estimated Young’s modulus compared with uniaxial compression tests. We also performed pilot experiments on ex vivo mouse cardiac muscle tissues with normal and genetically altered cardiomyocytes. Our results indicate this noncontact quantitative optical coherence elastographic method can be a useful tool for the cardiac muscle research and studies.

Paper Details

Date Published: 2 March 2015
PDF: 7 pages
Proc. SPIE 9312, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIX, 93121Z (2 March 2015); doi: 10.1117/12.2078390
Show Author Affiliations
Shang Wang, Baylor College of Medicine (United States)
Univ. of Houston (United States)
Andrew L. Lopez, Baylor College of Medicine (United States)
Yuka Morikawa, Baylor College of Medicine (United States)
Ge Tao, Baylor College of Medicine (United States)
Jiasong Li, Univ. of Houston (United States)
Irina V. Larina, Baylor College of Medicine (United States)
James F. Martin, Baylor College of Medicine (United States)
The Texas Heart Institute (United States)
Kirill V. Larin, Baylor College of Medicine (United States)
Univ. of Houston (United States)


Published in SPIE Proceedings Vol. 9312:
Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIX
James G. Fujimoto; Joseph A. Izatt; Valery V. Tuchin, Editor(s)

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