Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Feedback control systems01:26

Feedback control systems

725
Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
725
Echo01:06

Echo

980
The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
980
Feedback Inhibition00:46

Feedback Inhibition

57.2K
Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell!
57.2K
Feedback Loops01:01

Feedback Loops

64.5K
In most cases, excessive hormone production is prevented by negative feedback—a loop that starts with a stimulus inducing the release of a particular substance, like a hormone, to maintain a certain level before triggering a signal that results in a decrease in further release of the hormone.
64.5K
Effects of feedback01:24

Effects of feedback

1.0K
Feedback in control systems plays a critical role in shaping various operational parameters, extending beyond simple error reduction to influence stability, bandwidth, gain, impedance, and sensitivity. Understanding these effects requires examining a basic feedback system characterized by defined input, output, error, and feedback signals.
Feedback significantly modifies the gain of a control system. The gain of a system without feedback is altered by a factor of one plus GH, where G represents...
1.0K
Bulk Modulus01:21

Bulk Modulus

787
The bulk modulus is a scientific term used to describe a material's resistance to uniform compression. It is the proportionality constant that links a change in pressure to the resulting relative volume change.
787

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Assessment of Hyoid Bone Movement by Simultaneous Ultrasound and Videofluoroscopic Imaging.

Dysphagia·2026
Same author

An automatic, simple ultrasound biofeedback parameter for distinguishing accurate and misarticulated rhotic syllables.

Interspeech·2026
Same author

Elucidating ultrasound imaging of /ɹ/ tongue shapes using full-wave numerical simulationsa).

The Journal of the Acoustical Society of America·2025
Same author

Acoustic Propagation in a Medium with Spatially Distributed Relaxation Processes and a Possible Explanation of a Frequency Power Law Attenuation.

Journal of theoretical and computational acoustics·2025
Same author

Participatory Design: Addressing Speech-Language Pathologists' Challenges through Collaborative Interface Design.

Design issues·2025
Same author

Toward near real-time precise supervision of radiofrequency ablation for liver fibrosis using hyperspectral imaging.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy·2025

Related Experiment Video

Updated: Feb 8, 2026

Echo Particle Image Velocimetry
16:31

Echo Particle Image Velocimetry

Published on: December 27, 2012

15.1K

Optimized Echo Decorrelation Imaging Feedback for Bulk Ultrasound Ablation Control.

Mohamed A Abbass, Allison-Joy Garbo, Neeraja Mahalingam

    IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
    |July 12, 2018
    PubMed
    Summary

    Controlling bulk ultrasound (US) thermal ablation is feasible using echo decorrelation imaging. Both minimum and average decorrelation criteria offer improved ablation prediction and rates compared to uncontrolled methods.

    More Related Videos

    Ultrasound Tissue Characterization of Human Achilles Tendon by Stability Quantification of Echo Patterns
    08:11

    Ultrasound Tissue Characterization of Human Achilles Tendon by Stability Quantification of Echo Patterns

    Published on: September 5, 2025

    526
    Real-time Monitoring of High Intensity Focused Ultrasound HIFU Ablation of In Vitro Canine Livers Using Harmonic Motion Imaging for Focused Ultrasound HMIFU
    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

    Published on: November 3, 2015

    10.5K

    Related Experiment Videos

    Last Updated: Feb 8, 2026

    Echo Particle Image Velocimetry
    16:31

    Echo Particle Image Velocimetry

    Published on: December 27, 2012

    15.1K
    Ultrasound Tissue Characterization of Human Achilles Tendon by Stability Quantification of Echo Patterns
    08:11

    Ultrasound Tissue Characterization of Human Achilles Tendon by Stability Quantification of Echo Patterns

    Published on: September 5, 2025

    526
    Real-time Monitoring of High Intensity Focused Ultrasound HIFU Ablation of In Vitro Canine Livers Using Harmonic Motion Imaging for Focused Ultrasound HMIFU
    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

    Published on: November 3, 2015

    10.5K

    Area of Science:

    • Medical Imaging
    • Ultrasound Technology
    • Thermal Ablation

    Background:

    • Bulk ultrasound (US) thermal ablation is a promising therapeutic technique.
    • Precise control over ablation extent is crucial for efficacy and safety.
    • Echo decorrelation imaging offers a potential method for real-time monitoring of thermal ablation.

    Purpose of the Study:

    • To investigate the feasibility of controlling bulk US thermal ablation using echo decorrelation imaging.
    • To compare the effectiveness of minimum decorrelation versus average decorrelation criteria for ablation control.
    • To evaluate the impact of constant-intensity versus variable-intensity sonication sequences on ablation outcomes.

    Main Methods:

    • Ex vivo bovine liver model used for ablation experiments.
    • A linear image-ablate array performed US exposures and echo decorrelation imaging.
    • Two control strategies were employed: minimum decorrelation in a ROI and spatially averaged decorrelation.
    • Controlled trials were compared against uncontrolled trials with fixed sonication cycles (9 or 18).

    Main Results:

    • Both minimum and average decorrelation criteria significantly reduced treatment times compared to 18-cycle uncontrolled treatments.
    • Controlled trials demonstrated superior ablation prediction performance over uncontrolled 9-cycle and 18-cycle treatments.
    • Both control approaches yielded higher ablation rates than uncontrolled methods.
    • Variable-intensity sonication resulted in larger ablated regions compared to constant-intensity sonication.

    Conclusions:

    • Echo decorrelation imaging, using either minimum or average decorrelation criteria, is a feasible method for controlling bulk US thermal ablation.
    • Variable-intensity sonication sequences can enhance the extent of thermal ablation.
    • These findings support the development of image-guided US ablation systems for improved therapeutic outcomes.