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Imaging shear wave propagation for elastic measurement using OCT Doppler variance method

机译:使用OCT多普勒方差法成像剪切波传播以进行弹性测量

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摘要

In this study, we have developed an acoustic radiation force orthogonal excitation optical coherence elastography (ARFOE-OCE) method for the visualization of the shear wave and the calculation of the shear modulus based on the OCT Doppler variance method. The vibration perpendicular to the OCT detection direction is induced by the remote acoustic radiation force (ARF) and the shear wave propagating along the OCT beam is visualized by the OCT M-scan. The homogeneous agar phantom and two-layer agar phantom are measured using the ARFOE-OCE system. The results show that the ARFOE-OCE system has the ability to measure the shear modulus beyond the OCT imaging depth. The OCT Doppler variance method, instead of the OCT Doppler phase method, is used for vibration detection without the need of high phase stability and phase wrapping correction. An M-scan instead of the B-scan for the visualization of the shear wave also simplifies the data processing.
机译:在这项研究中,我们已经开发了一种声辐射力正交激发光学相干弹性成像(ARFOE-OCE)方法,用于可视化剪切波和基于OCT多普勒方差法的剪切模量计算。垂直于OCT检测方向的振动是由远程声辐射力(ARF)引起的,而沿OCT光束传播的剪切波通过OCT M扫描可视化。使用ARFOE-OCE系统测量均质琼脂模型和两层琼脂模型。结果表明,ARFOE-OCE系统具有测量超出OCT成像深度的剪切模量的能力。 OCT多普勒方差方法代替了OCT多普勒相位方法,可用于振动检测,而无需高相位稳定性和相位包裹校正。用M扫描代替B扫描来显示剪切波,这也简化了数据处理。

著录项

  • 来源
  • 会议地点 San Francisco CA(US)
  • 作者单位

    Beckman Laser Institute, University of California, Irvine, Irvine, California 92612;

    Beckman Laser Institute, University of California, Irvine, Irvine, California 92612,Department of Biomedical Engineering, University of California, Irvine, Irvine, California 92697;

    Beckman Laser Institute, University of California, Irvine, Irvine, California 92612,Department of Biomedical Engineering, University of California, Irvine, Irvine, California 92697;

    Department of Biomedical Engineering, University of Southern California, Los Angeles, California 90089;

    Beckman Laser Institute, University of California, Irvine, Irvine, California 92612;

    Beckman Laser Institute, University of California, Irvine, Irvine, California 92612;

    Beckman Laser Institute, University of California, Irvine, Irvine, California 92612;

    Department of Biomedical Engineering, University of Southern California, Los Angeles, California 90089;

    Department of Biomedical Engineering, University of Southern California, Los Angeles, California 90089;

    Beckman Laser Institute, University of California, Irvine, Irvine, California 92612,Department of Biomedical Engineering, University of California, Irvine, Irvine, California 92697;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Optical coherence tomography; OCT Doppler variance; Optical coherence elastography; Acoustic radiation force; Shear wave;

    机译:光学相干断层扫描; OCT多普勒方差;光学相干弹性成像;声辐射力;剪切波;

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