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Related Concept Videos

Thermal Strain01:19

Thermal Strain

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Thermal strain is a concept that arises when we consider how temperature changes affect structures. Unlike the conventional assumption that structures remain constant under load, real-world scenarios often involve temperature fluctuations that can significantly impact these structures. Consider a homogeneous rod with a uniform cross-section resting freely on a flat horizontal surface. If the rod's temperature increases, the rod elongates. This elongation is proportional to the temperature...
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Equipments Used to Measure Body Temperature01:13

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Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit.
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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.
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Measurements of Strain01:27

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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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Temperature Measurement Sites01:14

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A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
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Endoscopic Ultrasound (EUS) and FibroScan are valuable diagnostic tools in gastroenterology and hepatology, each with specific applications and techniques.
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Updated: May 24, 2025

A Novel Application of Musculoskeletal Ultrasound Imaging
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Thermal Strain Estimation Using Ultrasound Echo Stretching Algorithm for Temperature Monitoring: Initial Results.

Muthu Rattina Subash Ramu, Kavitha Arunachalam, Arun Kumar Thittai

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    Summary
    This summary is machine-generated.

    This study introduces a novel single-step ultrasound technique for precise temperature monitoring during thermal therapies. It directly estimates thermal strain, improving accuracy over existing multi-step methods for real-time temperature tracking.

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    Area of Science:

    • Medical Imaging
    • Biomedical Engineering
    • Acoustics

    Background:

    • Ultrasound is valuable for temperature monitoring in thermal therapies.
    • Speed of sound in tissue varies near-linearly with temperature (25-50 °C).
    • Spatial speed of sound variations cause detectable thermal strain in ultrasound signals.

    Purpose of the Study:

    • To develop a single-step method for direct thermal strain estimation.
    • To improve the accuracy of ultrasound-based temperature monitoring.
    • To enable precise temperature mapping in thermal therapies.

    Main Methods:

    • Proposed a single-step technique for direct thermal strain estimation.
    • Employed range gating in reference and desired ultrasound frames.
    • Utilized RF echo stretching and cross-correlation for precise echo matching.
    • Generated a stretch factor map, scaled to create an absolute temperature map.

    Main Results:

    • Successfully demonstrated a single-step thermal strain estimation technique.
    • Developed an algorithm to generate absolute temperature maps.
    • Validated the method's performance on a homogenous tissue-mimicking phantom.
    • Showcased the ability to track temperature changes using a curvilinear probe.

    Conclusions:

    • The proposed single-step ultrasound method offers a more accurate approach to temperature monitoring.
    • This technique has the potential to enhance the precision and safety of thermal therapies.
    • Direct thermal strain estimation overcomes limitations of current multi-step methods.