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Related Concept Videos

Measurements of Strain01:27

Measurements of Strain

2.8K
Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain...
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Three-Dimensional Analysis of Strain01:29

Three-Dimensional Analysis of Strain

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Three-dimensional strain analysis is crucial for understanding how materials deform under stress, particularly in elastic, homogeneous materials. This method employs principal stress axes to simplify complex stress states into more understandable forms. Subjected to stress, a small cubic element within a material either expands or contracts along these axes, transforming into a rectangular parallelepiped. This transformation effectively illustrates the material's deformation. The principal...
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Ultrasonography01:17

Ultrasonography

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Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called...
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Related Experiment Video

Updated: Apr 18, 2026

Monitoring the Wall Mechanics During Stent Deployment in a Vessel
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3-D ultrasonic strain imaging based on a linear scanning system.

Qinghua Huang, Bo Xie, Pengfei Ye

    IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
    |February 3, 2015
    PubMed
    Summary

    This study presents a novel 3-D strain imaging technique using freehand ultrasound scanning. The method enables high-quality 3-D strain imaging for potential clinical use in musculoskeletal assessments.

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    Area of Science:

    • Medical Imaging
    • Biomedical Engineering
    • Ultrasound Technology

    Background:

    • Introduces a 3-D strain imaging method utilizing a freehand linear scanning mode.
    • Employs a custom sliding track with a position sensor and adjustable holder for precise probe movement.
    • Real-time positional data transmission via Bluetooth enhances scanning accuracy.

    Discussion:

    • A volume cubic is defined for 3-D strain image generation, with voxels representing relative tissue strains.
    • Pre-compression frames are re-sampled to match post-compression frames for accurate strain estimation.
    • A dynamic programming approach minimizes cost functions for 2-D strain image generation from paired frames.

    Key Insights:

    • High-quality 3-D strain images of phantoms and human tissues were successfully generated.
    • The developed software system supports volume reconstruction, visualization, and measurement.
    • The method demonstrates potential for clinical applications, particularly in musculoskeletal assessments.

    Outlook:

    • Further validation in diverse clinical settings is warranted.
    • Potential for integration with existing ultrasound systems.
    • Exploration of advanced visualization and analysis techniques for 3-D strain data.