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 - I00:56

Doppler Effect - I

6.4K
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...
6.4K
Doppler Effect - II01:05

Doppler Effect - II

4.7K
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...
4.7K
The Wave Nature of Light02:12

The Wave Nature of Light

61.3K
The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.
61.3K
Nursing Implementation01:15

Nursing Implementation

6.2K
Implementation is the execution of the nursing care plan developed during the planning phase.
The five steps to implementing effective nursing care include reassessing the patient, reviewing and revising the existing nursing care plan, organizing the resources and care delivery, anticipating and preventing complications, and implementing nursing interventions.
6.2K
Electric Potential and Potential Difference01:16

Electric Potential and Potential Difference

5.7K
Suppose a positive test charge moves away from a positive static charge, then the Coulomb force does positive work, and its electric potential energy decreases. The potential energy per unit charge is defined as the electric potential. The electric potential is independent of the test charge.
When a test charge moves from the initial to the final position, the electric potential difference between those positions is defined as the ratio of the change in the potential energy to the charge on the...
5.7K
Difference from Background: Limit of Detection01:05

Difference from Background: Limit of Detection

8.3K
The limit of detection (LOD) is the smallest amount of analyte that can be distinguished from the background noise. The LOD value corresponds to the concentration at which the analyte signal is three times larger than the standard deviation of the blank signal. Below this value, the analyte signal cannot be differentiated from the background noise. It is calculated by dividing the calibration slope by 3 times the standard deviation of the blank signals.
The LOD indicates the presence or absence...
8.3K

You might also read

Related Articles

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

Sort by
Same author

Closing the Last Mile Gap in Access to Multimodality Imaging in Rural Settings: Design of the Imaging Core of the Risk Underlying Rural Areas Longitudinal Study.

Circulation. Cardiovascular imaging·2024
Same author

Deep Learning-Based Automated Echocardiographic Quantification of Left Ventricular Ejection Fraction: A Point-of-Care Solution.

Circulation. Cardiovascular imaging·2021
Same author

Utility of a Deep-Learning Algorithm to Guide Novices to Acquire Echocardiograms for Limited Diagnostic Use.

JAMA cardiology·2021
Same author

Imaging the mitral valve: a primer for the interventional surgeon.

Annals of cardiothoracic surgery·2021
Same author

The Need for Echocardiography Alerts for Aortic Stenosis: The Time Has Come.

Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography·2020
Same author

Novel Multiphase Assessment for Predicting Left Ventricular Outflow Tract Obstruction Before Transcatheter Mitral Valve Replacement.

JACC. Cardiovascular interventions·2019

Related Experiment Video

Updated: Feb 3, 2026

Fetal Echocardiography and Pulsed-wave Doppler Ultrasound in a Rabbit Model of Intrauterine Growth Restriction
14:19

Fetal Echocardiography and Pulsed-wave Doppler Ultrasound in a Rabbit Model of Intrauterine Growth Restriction

Published on: June 29, 2013

28.7K

Clinical Implementation of Continuous-Wave Doppler: It Made All the Difference.

Randolph P Martin1

  • 1Emory University School, Atlanta, Georgia.

Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography
|October 28, 2018
PubMed
Summary

Continuous-wave Doppler (CWD) is crucial for assessing cardiovascular hemodynamics noninvasively, particularly in aortic stenosis. Early CWD use highlighted the value of engineering contributions and specific probes for diagnosing high-velocity flows.

Keywords:
Continous wavePEDOFStenosis

More Related Videos

Continuous Venous-Arterial Doppler Ultrasound During a Preload Challenge
09:32

Continuous Venous-Arterial Doppler Ultrasound During a Preload Challenge

Published on: January 20, 2023

4.1K
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

15.0K

Related Experiment Videos

Last Updated: Feb 3, 2026

Fetal Echocardiography and Pulsed-wave Doppler Ultrasound in a Rabbit Model of Intrauterine Growth Restriction
14:19

Fetal Echocardiography and Pulsed-wave Doppler Ultrasound in a Rabbit Model of Intrauterine Growth Restriction

Published on: June 29, 2013

28.7K
Continuous Venous-Arterial Doppler Ultrasound During a Preload Challenge
09:32

Continuous Venous-Arterial Doppler Ultrasound During a Preload Challenge

Published on: January 20, 2023

4.1K
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

15.0K

Area of Science:

  • Cardiology
  • Medical Imaging
  • Biomedical Engineering

Background:

  • Doppler echocardiography is essential for noninvasive cardiovascular hemodynamics assessment.
  • Continuous-wave Doppler (CWD) is vital for diagnosing and managing aortic stenosis.
  • Pioneering work in Norway established CWD's role in valvular heart disease.

Purpose of the Study:

  • To highlight key lessons learned from the early use of CWD in North America.
  • To emphasize the importance of interdisciplinary collaboration between cardiology and engineering.
  • To underscore the diagnostic value of CWD in various cardiovascular conditions.

Main Methods:

  • Utilized early Continuous-wave Doppler (CWD) instruments for clinical application.
  • Focused on the diagnostic capabilities of CWD for high-velocity flows.
  • Leveraged the audio signal from CWD probes for enhanced detection.

Main Results:

  • Demonstrated the critical role of engineering and sonographer contributions to CWD development.
  • Confirmed the significance of the independent PEDOF CWD probe for accurate measurements.
  • Validated the utility of CWD in diagnosing and managing aortic stenosis and other cardiovascular conditions.

Conclusions:

  • CWD is indispensable for noninvasive hemodynamic assessment, especially in aortic stenosis.
  • Interdisciplinary collaboration is key to advancing echocardiographic technologies.
  • CWD remains a valuable tool for diagnosing and managing a range of cardiovascular diseases.