Ultrasound Motion Tracking
Ultrasound Motion Tracking - Related Videos
07:38
Real-time Monitoring of High Intensity Focused Ultrasound (HIFU) Ablation of In Vitro Canine Livers Using Harmonic Motion Imaging for Focused Ultrasound (HMIFU)
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Cited by 13 •
2015
This article describes real-time monitoring of HIFU ablation in canine liver with high frame rate ultrasound imaging using diverging and plane wave imaging. Harmonic Motion Imaging for Focused Ultrasound is used to image the decrease of acoustic radiation force induced displacement in the ablated region.
07:24
Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane
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2025
The methodology explored visual and vestibular contributions to gaze stabilization during optokinetic and whole-body rotations. Stimulations were carried out through visual, vestibular, and visuovestibular trials. Torsional eye-movement gain and nystagmus frequencies served as indicators for the subcortical relay of sensory-specific motion information towards the reflexive brainstem response for each trial.
10:53
A Novel Application of Musculoskeletal Ultrasound Imaging
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Cited by 14 •
2013
We describe a new ultrasound-based vector tissue Doppler imaging technique to measure muscle contraction velocity, strain and strain rate with sub-millisecond temporal resolution during dynamic activities. This approach provides complementary measurements of dynamic muscle function and could lead to a better understanding of mechanisms underlying musculoskeletal disorders.
10:12
Newton's Laws of Motion
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2023
Source: Andrew Duffy, PhD, Department of Physics, Boston University, Boston, MA This experiment examines at various situations involving two interacting objects. First, the experiment examines the forces that two objects apply to one another while they collide. The objects are wheeled carts that have variable masses. The purpose of this experiment is to discover when the force the first cart exerts on the other is the same magnitude as the force the second cart exerts back on the first, as well...
16:01
An Experimental Protocol for Assessing the Performance of New Ultrasound Probes Based on CMUT Technology in Application to Brain Imaging
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Cited by 4 •
2017
The development of new ultrasound (US) probes based on Capacitive Micromachined Ultrasonic Transducer (CMUT) technology requires an early realistic assessment of imaging capabilities. We describe a repeatable experimental protocol for US image acquisition and comparison with magnetic resonance images, using an ex vivo bovine brain as an imaging target.
FAQs
Sequential frames provide a time-ordered record of tissue appearance. Tracking a recognizable acoustic speckle pattern from one frame to the next allows the system to estimate how far that pattern has shifted. Those shifts are converted into motion measurements rather than relying only on visual inspection, making subtle movement available for quantitative analysis.
Doppler methods estimate motion from frequency shifts in returning sound waves, whereas speckle-based tracking follows recognizable image patterns across frames. Both approaches add motion information to ultrasound imaging, but they obtain it through different signals. This distinction allows motion assessment to be described through either pattern displacement or Doppler-derived frequency changes.
These measurements describe different aspects of movement. Displacement indicates a change in position, while velocity describes how quickly that change occurs. Strain and deformation characterize how tissue changes shape or length during motion. Together, they provide more detailed functional information than a static image or a purely visual judgment of movement.
Tracking depends on comparing corresponding patterns in sequential frames. When an acoustic speckle or another recognizable feature can be followed over time, its changing position supports calculation of movement. If the visual pattern cannot be identified consistently, the resulting displacement or deformation estimate becomes less informative, so image features are central to the measurement process.
The workflow begins by acquiring ultrasound images across time rather than evaluating a single frame. Sequential images are then compared, and recognizable patterns or Doppler frequency shifts are analyzed to estimate motion. The system can express the result as displacement, velocity, strain, or deformation, providing quantitative information for subsequent medical assessment.
In cardiac assessment, motion measurements can supplement conventional ultrasound images by quantifying movement of cardiac structures over time. Displacement, velocity, strain, or deformation may reveal functional changes that are difficult to judge visually. This added information can support functional diagnosis and help clinicians evaluate cardiac motion without introducing ionizing radiation.
The technique can provide quantitative motion information during fetal monitoring and vascular studies. Rather than limiting assessment to the appearance of an ultrasound image, clinicians can examine movement-related measurements derived from sequential frames or Doppler frequency shifts. This supports evaluation of changing biological motion while retaining the noninvasive character of ultrasound imaging.
Musculoskeletal evaluation can benefit when tissue movement or deformation is difficult to assess by eye. Quantitative measurements add functional information to the image, helping reveal motion-related changes that conventional viewing may miss. The same capability can support treatment guidance and real-time monitoring, while ultrasound avoids the ionizing radiation associated with some other imaging approaches.