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Related Concept Videos

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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...
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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...
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Venous thrombosis, the most common disorder of the veins, involves the formation of a thrombus or blood clot associated with vein inflammation. It can be classified as either superficial vein thrombosis or deep vein thrombosis.Superficial Vein Thrombosis: This involves the formation of a thrombus in a superficial vein, usually the greater or lesser saphenous vein. Though less severe than deep vein thrombosis (DVT), SVT can lead to complications if untreated.Deep Vein Thrombosis (DVT): This...
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To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
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Related Experiment Video

Updated: Feb 10, 2026

Continuous Venous-Arterial Doppler Ultrasound During a Preload Challenge
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Continuous Venous-Arterial Doppler Ultrasound During a Preload Challenge

Published on: January 20, 2023

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Jugular Venous Flow Quantification Using Doppler Sonography.

Karen Marr1, Dejan Jakimovski1, Marcello Mancini2

  • 1Buffalo Neuroimaging Analysis Center, Department of Neurology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, New York, USA.

Ultrasound in Medicine & Biology
|May 23, 2018
PubMed
Summary

Quantifying venous blood flow with Doppler sonography lacks consensus. Manual calculations for internal jugular vein flow were nearly double automated results, indicating current automated methods are inaccurate.

Keywords:
Blood flowDoppler sonographyInternal jugular veinVeins

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Blood Flow Imaging with Ultrafast Doppler
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Area of Science:

  • Vascular Ultrasound
  • Hemodynamics
  • Medical Imaging

Background:

  • Accurate quantification of venous blood flow is crucial for clinical diagnosis but lacks standardized methods.
  • Echo spectral Doppler sonography is a common tool, yet consensus on its application for venous flow measurement is absent.
  • Existing automated calculations may not reliably reflect true venous hemodynamics.

Purpose of the Study:

  • To compare manual and semi-automated methods for calculating venous blood flow using Doppler sonography.
  • To assess the accuracy of current automated Doppler sonography techniques for venous flow quantification.
  • To determine the reliability of internal jugular vein and common carotid artery flow measurements.

Main Methods:

  • Doppler sonography data from 83 healthy individuals were analyzed.
  • Internal jugular vein measurements included manually traced cross-sectional area and diameter-derived area.
  • Blood flow volume was calculated manually and via semi-automated methods for both common carotid artery and internal jugular vein.

Main Results:

  • No significant difference was found between manual and semi-automated blood flow calculations for the common carotid artery.
  • Manual calculation of internal jugular vein blood flow yielded results nearly twofold higher than semi-automated methods.
  • Automated Doppler sonography equipment demonstrated inaccuracies in calculating venous size and blood flow volume.

Conclusions:

  • Current automated Doppler sonography systems are not accurate for quantifying venous blood flow.
  • Manual calculation methods are currently warranted for reliable venous blood flow assessment.
  • Further technological advancements are needed to improve automated venous flow quantification.