Coaxial excitation longitudinal shear wave measurement for quantitative elasticity assessment using phase-resolved optical coherence elastography

Optical coherence elastography (OCE) is an emerging imaging modality for the assessment of mechanical properties in soft tissues. Transverse shear wave measurements using OCE can quantify the elastic moduli perpendicular to the force direction, however, missing the elastic information along the forc...

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Bibliographic Details
Published in:Optics letters 2018-05, Vol.43 (10), p.2388-2391
Main Authors: Zhu, Jiang, Yu, Junxiao, Qu, Yueqiao, He, Youmin, Li, Yan, Yang, Qiang, Huo, Tiancheng, He, Xingdao, Chen, Zhongping
Format: Article
Language:English
Subjects:
Coherence
Elastic properties
Excitation
Materials elasticity
Mechanical properties
Modulus of elasticity
Rayleigh waves
S waves
Soft tissues
Tissues
Transverse shear
Wave measurement
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Summary:Optical coherence elastography (OCE) is an emerging imaging modality for the assessment of mechanical properties in soft tissues. Transverse shear wave measurements using OCE can quantify the elastic moduli perpendicular to the force direction, however, missing the elastic information along the force direction. In this study, we developed coaxial excitation longitudinal shear wave measurements for quantification of elastic moduli along the force direction using M-scans. Incorporating Rayleigh wave measurements using non-coaxial lateral scans into longitudinal shear wave measurements, directionally dependent elastic properties can be quantified along the force direction and perpendicular to the force direction. Therefore, the reported system has the capability to image elasticity of anisotropic biological tissues.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.43.002388