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

Doppler Effect - II01:05

Doppler Effect - II

3.4K
The Doppler effect has several practical, real-world applications. For instance, meteorologists use Doppler radars to interpret weather events based on the Doppler effect. Typically, a transmitter emits radio waves at a specific frequency toward the sky from a weather station. The radio waves bounce off the clouds and precipitation and travel back to the weather station. The radio frequency of the waves reflected back to the station appears to decrease if the clouds or precipitation are moving...
3.4K
Doppler Effect - I00:56

Doppler Effect - I

3.6K
The Doppler effect and Doppler shift were named after the Austrian physicist and mathematician Christian Johann Doppler in 1842, who conducted experiments with both moving sources and moving observers. Consider an observer standing on a street corner, observing an ambulance with a siren sound passing by at a constant speed. The observer experiences two characteristic changes in the sound of the siren. Initially, the sound increases in loudness as the ambulance approaches and decreases in...
3.6K
Linear Approximation in Frequency Domain01:26

Linear Approximation in Frequency Domain

110
Linear systems are characterized by two main properties: superposition and homogeneity. Superposition allows the response to multiple inputs to be the sum of the responses to each individual input. Homogeneity ensures that scaling an input by a scalar results in the response being scaled by the same scalar.
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
110
Downsampling01:20

Downsampling

185
When considering a sampled sequence with zero values between sampling instants, one can replace it by taking every N-th value of the sequence. At these integer multiples of N, the original and sampled sequences coincide. This process, known as decimation, involves extracting every N-th sample from a sequence, thereby creating a more efficient sequence.
The Fourier transform of the decimated sequence reveals a combination of scaled and shifted versions of the original spectrum. This...
185
Uniform Depth Channel Flow: Problem Solving01:18

Uniform Depth Channel Flow: Problem Solving

87
To calculate the flow rate for a trapezoidal channel, first, identify the bottom width, side slope, and flow depth of the channel. The cross-sectional area (A) corresponding to the depth of flow (y), channel bottom width (B), and side slope (θ) is determined by:Next, calculate the wetted perimeter, which includes the bottom width and the sloped side lengths in contact with the water. Using the values of the cross-sectional area and the wetted perimeter, determine the hydraulic radius by...
87
Deconvolution01:20

Deconvolution

188
Deconvolution, also known as inverse filtering, is the process of extracting the impulse response from known input and output signals. This technique is vital in scenarios where the system's characteristics are unknown, and they must be inferred from the observable signals.
Deconvolution involves several mathematical techniques to derive the impulse response. One common approach is polynomial division. In this method, the input and output sequences are treated as coefficients of...
188

You might also read

Related Articles

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

Sort by
Same author

The influence of aging on graded peripheral venous return and complex blood flow features through human veins.

GeroScience·2026
Same author

Good-eating-quality QTLs detected in two breeding populations by genome-wide association mapping increase eating quality of the Japanese rice cultivar 'Koshihikari'.

Breeding science·2026
Same author

Tuning Coalescence Stability and Acoustic Properties of High-Production-Rate Fabricated DSPC-Based Monodisperse Microbubbles Using Surfactant Tween 20.

Langmuir : the ACS journal of surfaces and colloids·2026
Same author

Correction: Phenology analysis for trait prediction using UAVs in a MAGIC rice population with different transplanting protocols.

Frontiers in artificial intelligence·2025
Same author

Role of Cell Culture Scaffold Stiffness on Sonoporation Efficiency.

Ultrasound in medicine & biology·2025
Same author

Optimized Apodizations with Training Simulations (OATS): Learned depth-dependent apodizations via differentiable beamforming for reduced operator tuning.

Ultrasonics·2025
Same journal

Theoretical Foundations of the Echo Envelope Statistical Modeling: A Tutorial.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2025
Same journal

Practical Demonstrations of FR3-Band Thin-Film Lithium Niobate Acoustic Filter Design.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2025
Same journal

Real-Time Heterogeneous Helical Wave Spectrum Method for Transabdominal Passive Acoustic Mapping.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2025
Same journal

Cascaded Plane Wave Ultrasound Velocity Vector Imaging: In Vivo Feasibility in Carotid Arteries.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2025
Same journal

Quantitative Acoustic Attenuation Scanning Using a Phase-Insensitive Ultrasound Computed Tomography System.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2025
Same journal

FPGA-Accelerated CNN Reconstruction for Low-Power Sparse-Array Ultrasound Imaging.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2025
See all related articles

Related Experiment Video

Updated: Jul 19, 2025

Blood Flow Imaging with Ultrafast Doppler
05:57

Blood Flow Imaging with Ultrafast Doppler

Published on: October 14, 2020

7.7K

A GPU-Based, Real-Time Dealiasing Framework for High-Frame-Rate Vector Doppler Imaging.

Hassan Nahas, Takuro Ishii, Billy Y S Yiu

    IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
    |August 7, 2023
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a new real-time framework for vector Doppler imaging, significantly reducing aliasing artifacts. The method enables accurate flow vector estimation for improved visualization of complex blood flow dynamics.

    More Related Videos

    High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
    11:34

    High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

    Published on: December 3, 2013

    15.7K
    Digital Inline Holographic Microscopy DIHM of Weakly-scattering Subjects
    10:16

    Digital Inline Holographic Microscopy DIHM of Weakly-scattering Subjects

    Published on: February 8, 2014

    12.3K

    Related Experiment Videos

    Last Updated: Jul 19, 2025

    Blood Flow Imaging with Ultrafast Doppler
    05:57

    Blood Flow Imaging with Ultrafast Doppler

    Published on: October 14, 2020

    7.7K
    High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
    11:34

    High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

    Published on: December 3, 2013

    15.7K
    Digital Inline Holographic Microscopy DIHM of Weakly-scattering Subjects
    10:16

    Digital Inline Holographic Microscopy DIHM of Weakly-scattering Subjects

    Published on: February 8, 2014

    12.3K

    Area of Science:

    • Medical Imaging
    • Ultrasound Technology
    • Computational Fluid Dynamics

    Background:

    • Vector Doppler imaging is crucial for visualizing complex blood flow but is hindered by aliasing artifacts.
    • Real-time dealiasing solutions are essential for enhancing the clinical utility of vector Doppler.

    Purpose of the Study:

    • To develop a novel methodological framework for aliasing-resistant flow vector estimation in real-time.
    • To integrate an extended least squares vector Doppler (ELS-VD) algorithm with GPU acceleration for high-throughput processing.

    Main Methods:

    • Implementation of a synergistic framework combining ELS-VD, single-instruction, multiple-thread (SIMT) principles, and graphical processing unit (GPU) acceleration.
    • Utilizing high-frame-rate imaging datasets from multiple transmit-receive angle pairs.
    • Testing on carotid phantom and human femoral bifurcation imaging scenarios.

    Main Results:

    • The framework achieved aliasing-free flow vector maps in a carotid phantom at over 62.5 frames/s.
    • Effectively resolved two-cycle aliasing artifacts in a human femoral bifurcation with fast flow (150 cm/s) at over 53 frames/s.
    • Demonstrated real-time processing throughput for practical ELS-VD parameter combinations.

    Conclusions:

    • This work presents the first real-time, GPU-based system for aliasing-resistant vector flow imaging using vector Doppler principles.
    • The developed framework significantly improves the accuracy and visualization of complex flow profiles.
    • The system offers practical real-time performance for advanced hemodynamic assessment.