Characterizing Rayleigh wave and longitudinal shear wave propagation for measurements of elastic moduli using optical coherence elastography. (7th January 2021)

• Record Type: Journal Article
• Authors: Wang, Chongyang; Zhu, Jiang; Zhu, Lianqing; Liu, Jianting; Fan, Fan; Yang, Qiang; Zhang, Fan
• Is Part Of: Applied physics express. Volume 14:Number 1(2021)
• Publication Date: 2021-01-07
• Subjects: Elasticity measurement -- Longitudinal shear wave -- Rayleigh wave -- Propagation characteristics -- Optical coherence tomography; Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.35848/1882-0786/abd676
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: Optical coherence elastography based on the measurements of elastic wave speeds can quantify elastic moduli in the wave propagation directions and provide high-resolution elasticity maps for tissue. Here, we simultaneously visualized a longitudinal shear wave propagating along the depth and a Rayleigh wave propagating in the lateral direction, and analyzed the propagation characteristics of the elastic waves, including group speeds, frequency spectra, and frequency-dependent wave speeds. The analysis of the propagation characteristics demonstrates the reliability of the elasticity quantification by measuring different types of speeds of the elastic waves.