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 Experiment Videos

Spectral Doppler US

J M Rubin1

  • 1Department of Radiology, University of Michigan Hospitals, Ann Arbor 48109.

Radiographics : a Review Publication of the Radiological Society of North America, Inc
|January 1, 1994
PubMed
Summary
This summary is machine-generated.

Doppler ultrasonography (US) uses the Doppler frequency shift from red blood cells to measure blood velocity. Continuous-wave (CW) Doppler offers high sensitivity without depth resolution, while pulsed Doppler provides depth selection but is less sensitive and prone to aliasing.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

[Provisional pacemaker implantation guided by pocket echocardiography].

Medicina intensiva·2012
Same author

3-D correlation-based speckle tracking.

Ultrasonic imaging·2005
Same author

Standardization of power Doppler quantification of blood flow in the human fetus using the aorta and inferior vena cava.

Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology·2005
Same author

Renal advances in ultrasound elasticity imaging: measuring the compliance of arteries and kidneys in end-stage renal disease.

Blood purification·2005
Same author

Vascular intramural strain imaging using arterial pressure equalization.

Ultrasound in medicine & biology·2004
Same author

Triplex ultrasound: elasticity imaging to age deep venous thrombosis.

Ultrasound in medicine & biology·2002
Same journal

Invited Commentary: Postdeployment Monitoring of AI in Radiology: Beyond the Test Set.

Radiographics : a review publication of the Radiological Society of North America, Inc·2026
Same journal

Rosai-Dorfman Disease: Imaging and Updates.

Radiographics : a review publication of the Radiological Society of North America, Inc·2026
Same journal

Spectrum of Breast Sarcomas with Radiologic-Pathologic Correlation.

Radiographics : a review publication of the Radiological Society of North America, Inc·2026
Same journal

Postdeployment Monitoring and Surveillance Methods, Guidelines, and Possibilities for AI in Radiology.

Radiographics : a review publication of the Radiological Society of North America, Inc·2026
Same journal

Clinical Correlation for Imaging of Left Ventricular Assist Devices.

Radiographics : a review publication of the Radiological Society of North America, Inc·2026
Same journal

Invited Commentary: Three-Piece Inflatable Penile Prosthesis: Imaging Insights Beyond the Operating Room.

Radiographics : a review publication of the Radiological Society of North America, Inc·2026
See all related articles

Area of Science:

  • Medical Imaging
  • Ultrasound Technology
  • Cardiovascular Diagnostics

Background:

  • Doppler ultrasonography (US) is a key technique for assessing blood flow dynamics.
  • It relies on the Doppler frequency shift of ultrasound echoes from red blood cells to determine velocity.
  • Two primary modalities exist: continuous-wave (CW) and pulsed Doppler.

Purpose of the Study:

  • To elucidate the fundamental principles and comparative characteristics of continuous-wave (CW) and pulsed Doppler ultrasonography.
  • To highlight the operational differences, advantages, and limitations of each Doppler modality in blood velocity measurement.

Main Methods:

  • Continuous-wave (CW) Doppler utilizes a continuously transmitting transducer, offering high sensitivity and immunity to aliasing but lacking depth resolution.

Related Experiment Videos

  • Pulsed Doppler employs pulsed transmissions and a range gate to measure Doppler shifts from specific depths, allowing for depth selection but with reduced sensitivity and potential for aliasing at high velocities.
  • Doppler shifts are visualized in spectral format (frequency vs. time), with signal amplitude represented by monitor gray-scale.

    • Main Results:

    • CW Doppler excels in sensitivity and aliasing resistance, making it suitable for high-velocity flow detection without depth specificity.
    • Pulsed Doppler enables precise localization of flow measurements via range gating but is susceptible to aliasing and exhibits lower sensitivity compared to CW Doppler.
    • The spectral display provides a time-history of blood flow, with gray-scale indicating signal amplitude and red blood cell concentration.

    Conclusions:

    • Both CW and pulsed Doppler ultrasonography are valuable tools for blood velocity measurement, each with distinct strengths and weaknesses.
    • The choice between CW and pulsed Doppler depends on the specific clinical application, balancing the need for depth resolution against sensitivity and the risk of aliasing.
    • Understanding these differences is crucial for accurate interpretation of Doppler US findings in cardiovascular diagnostics.