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Related Experiment Video

Updated: Jun 28, 2026

Measuring the Stiffness of Ex Vivo Mouse Aortas Using Atomic Force Microscopy
10:35

Measuring the Stiffness of Ex Vivo Mouse Aortas Using Atomic Force Microscopy

Published on: October 19, 2016

An integrated indenter-ARFI imaging system for tissue stiffness quantification.

Liang Zhai1, Mark L Palmeri, Richard R Bouchard

  • 1Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA. liang.zhai@duke.edu

Ultrasonic Imaging
|October 23, 2008
PubMed
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This study introduces an integrated indenter-acoustic radiation force impulse (ARFI) imaging system for precise tissue stiffness measurement. The system accurately correlates mechanical properties with ARFI imaging, advancing diagnostic capabilities for ex vivo tissue analysis.

Area of Science:

  • Biomedical Engineering
  • Medical Imaging
  • Materials Science

Background:

  • Accurate characterization of tissue mechanical properties is crucial for disease diagnosis.
  • Acoustic Radiation Force Impulse (ARFI) imaging offers a non-invasive method to assess tissue stiffness.
  • Independent validation of ARFI-derived stiffness is needed, especially for heterogeneous tissues.

Purpose of the Study:

  • To develop and characterize an integrated system combining indentation and ARFI imaging.
  • To enable simultaneous acquisition of ARFI images and independent stiffness measurements from ex vivo tissues.
  • To validate ARFI imaging by correlating its results with independently measured material properties.

Main Methods:

  • Development of an integrated indenter-ARFI imaging system.

Related Experiment Videos

Last Updated: Jun 28, 2026

Measuring the Stiffness of Ex Vivo Mouse Aortas Using Atomic Force Microscopy
10:35

Measuring the Stiffness of Ex Vivo Mouse Aortas Using Atomic Force Microscopy

Published on: October 19, 2016

  • Utilizing Boussinesq's solution and finite element method (FEM) modeling for modulus reconstruction in homogeneous samples.
  • Performing indentation measurements on calibrated tissue-mimicking phantoms.
  • Applying the combined system to heterogeneous phantoms and ex vivo colon cancer specimens.

    • Main Results:

    • Indentation measurements on calibrated phantoms showed good agreement with known stiffness values.
    • The integrated system successfully detected relative stiffness variations and lesion sizes in heterogeneous samples.
    • Normalized displacement curves from indentation and ARFI imaging demonstrated good agreement for lesion profiles.

    Conclusions:

    • The developed integrated indenter-ARFI system provides accurate and correlated stiffness measurements.
    • This system facilitates the validation of ARFI imaging against independent mechanical property characterization.
    • The technology shows promise for improved diagnostic accuracy in ex vivo tissue analysis.