Jove
Visualize
Contact Us

Related Experiment Videos

On the aliasing problem in pulsed Doppler cardiac studies.

K Bom, J de Boo, H Rijsterborgh

    Journal of Clinical Ultrasound : JCU
    |November 1, 1984
    PubMed
    Summary

    Pulsed Doppler echocardiography velocity measurements are limited by aliasing, a common issue in adult cardiac studies. This study explains aliasing and how to avoid it in echocardiography.

    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

    The role of intravascular ultrasound imaging in vascular brachytherapy.

    International journal of cardiovascular interventions·2002
    Same author

    Influence of data processing on cyclic variation of integrated backscatter and wall thickness in stunned porcine myocardium.

    Ultrasound in medicine & biology·1997
    Same author

    Reproducibility of quantitative measurements from intracoronary ultrasound images. Beat-to-beat variability and influence of the cardiac cycle.

    European heart journal·1996
    Same author

    The relationship between myocardial integrated backscatter, perfusion pressure and wall thickness during isovolumic contraction: an isolated pig heart study.

    Ultrasound in medicine & biology·1996
    Same author

    An in vitro evaluation of the line pattern of the near and far walls of carotid arteries using B-mode ultrasound.

    Ultrasound in medicine & biology·1996
    Same author

    Histopathologic validation of intracoronary ultrasound imaging.

    Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography·1994
    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

    Area of Science:

    • Cardiovascular Imaging
    • Medical Ultrasound Technology

    Background:

    • Pulsed Doppler echocardiography is crucial for assessing blood flow dynamics.
    • The aliasing phenomenon limits the maximum measurable velocity in Doppler studies.
    • Aliasing frequently impacts adult cardiac echocardiography, necessitating careful interpretation.

    Purpose of the Study:

    • To explain the principle of aliasing in pulsed Doppler echocardiography.
    • To identify parameters influencing the aliasing phenomenon.
    • To demonstrate the clinical significance of aliasing in adult cardiac echo studies.
    • To present strategies for reducing or avoiding aliasing.

    Main Methods:

    • Explanation of the physical principles behind aliasing.
    • Analysis of factors influencing aliasing (e.g., Doppler frequency, sample volume depth, velocity).
    • Illustrative examples from tricuspid, mitral, and aortic Doppler echocardiography in adults.
    • Review of techniques to mitigate aliasing artifacts.

    Main Results:

    • Aliasing occurs when the true velocity exceeds the Nyquist limit, causing velocity to be underestimated.
    • Key influencing parameters include transducer frequency, depth, and spectral broadening.
    • Demonstrated aliasing in adult studies of valvular heart disease.
    • Identified methods like decreasing transducer frequency, increasing the Doppler angle, or using continuous wave Doppler to overcome aliasing.

    Conclusions:

    • Understanding aliasing is essential for accurate interpretation of Doppler echocardiography.
    • Strategies exist to minimize or eliminate aliasing, improving diagnostic confidence.
    • Proper application of Doppler techniques enhances the diagnostic value of echocardiography in adult cardiology.

    Related Experiment Videos