Strain calculation method and system for phase-sensitive optical coherence elastography

US12270636B1 · kind B1 · utility

Assignee

• GUANGDONG UNIVERSITY OF TECHNOLOGY · CN

Inventors

• Shengli Xie · Longbeilingcun, CN
• Bo Dong · Longbeilingcun, CN
• Rui Wu · Longbeilingcun, CN
• Zihao Ni · Longbeilingcun, CN
• Yulei Bai · Longbeilingcun, CN
• Victor Fedorovich Kuzin · Moscow, RU

Key dates

• Filing date: Nov 6, 2024
• Grant date: Apr 8, 2025
• Expiry date: Nov 6, 2044

Classification

• Technology area (CPC G): Physics
• CPC primary: G01B9/02091
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Disclosed is a strain calculation method and system for phase-sensitive optical coherence elastography (PhS-OCE), including the following steps: obtaining interference spectra for various states during sample deformation, and extracting spectral information including multiple amplitude maps and multiple phase maps from these interference spectra. In the present disclosure, the speckle decorrelation phenomenon in PhS-OCE can be eliminated, the measurement range is expanded, and tangential displacement fields and strain fields can be measured by PhS-OCE technique while ensuring high axial sensitivity in strain measurement.