Noncontact estimation of stiffness based on optical coherence elastography under acoustic radiation pressure

Yuki Hashimoto, Yasuaki Monnai

研究成果: Conference contribution

抄録

In this study, we propose a method of noncontact elastography, which allows us to investigate stiffness of soft structures by combining optical and acoustic modalities. We use optical coherence tomography (OCT) as a means of detecting internal deformation of a sample appearing in response to a mechanical force applied by acoustic radiation pressure. Unlike most of other stiffness sensing, this method can be performed without any contacts between the sample and actuator that generates pressure. To demonstrate the method, we measure the vibration velocity of a uniform phantom made of polyurethane, and characterize the mechanical parameters. We then confirm that the measured and calculated attenuation of the vibration over the depth agree well, which is inaccessible with a conventional laser Doppler vibrometer. This result paves a way to characterize more complex internal structures of soft materials.

本文言語English
ホスト出版物のタイトル2020 IEEE/RSJ International Conference on Intelligent Robots and Systems, IROS 2020
出版社Institute of Electrical and Electronics Engineers Inc.
ページ9840-9845
ページ数6
ISBN(電子版)9781728162126
DOI
出版ステータスPublished - 2020 10 24
イベント2020 IEEE/RSJ International Conference on Intelligent Robots and Systems, IROS 2020 - Las Vegas, United States
継続期間: 2020 10 242021 1 24

出版物シリーズ

名前IEEE International Conference on Intelligent Robots and Systems
ISSN(印刷版)2153-0858
ISSN(電子版)2153-0866

Conference

Conference2020 IEEE/RSJ International Conference on Intelligent Robots and Systems, IROS 2020
CountryUnited States
CityLas Vegas
Period20/10/2421/1/24

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Software
  • Computer Vision and Pattern Recognition
  • Computer Science Applications

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