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

Acoustic shadowing due to refractive and reflective effects.

F G Sommer, R A Filly, M J Minton

    AJR. American Journal of Roentgenology
    |June 1, 1979
    PubMed
    Summary

    Acoustic shadowing occurs behind rounded structures with different acoustic velocities. This review covers the refractive and reflective causes of shadowing, supported by in vitro and clinical examples.

    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 lung-to-head ratio and fetoscopic temporary tracheal occlusion: prediction of survival in severe left congenital diaphragmatic hernia.

    Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology·2003
    Same author

    Predicting pregnancy failure in 'empty' gestational sacs.

    Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology·2003
    Same author

    Power Doppler imaging and resistance index measurement in the evaluation of acute renal transplant rejection.

    Journal of clinical ultrasound : JCU·2001
    Same author

    The impact of the use of the isolated echogenic intracardiac focus as a screen for Down syndrome in women under the age of 35 years.

    American journal of obstetrics and gynecology·2001
    Same author

    Fetoscopic temporary tracheal occlusion by means of detachable balloon for congenital diaphragmatic hernia.

    American journal of obstetrics and gynecology·2001
    Same author

    Multidetector CT urography with abdominal compression and three-dimensional reconstruction.

    AJR. American journal of roentgenology·2001

    Area of Science:

    • Medical imaging
    • Ultrasound physics
    • Diagnostic radiology

    Background:

    • Acoustic shadowing is a common artifact in ultrasound imaging.
    • It appears as a signal-poor region distal to certain structures.
    • Understanding its mechanisms is crucial for accurate interpretation.

    Purpose of the Study:

    • To review the mechanisms of acoustic shadowing.
    • To present in vitro and clinical examples of shadowing.
    • To discuss the clinical significance of acoustic shadowing.

    Main Methods:

    • Review of acoustic shadowing mechanisms (refractive and reflective).
    • In vitro demonstrations of shadowing phenomena.
    • Presentation of clinical ultrasound images illustrating shadowing.

    Main Results:

    • Acoustic shadowing is caused by refraction and reflection at interfaces of differing acoustic velocities.
    • In vitro experiments confirmed these shadowing mechanisms.
    • Clinical examples demonstrated shadowing from various rounded structures.

    Conclusions:

    • Acoustic shadowing is a predictable phenomenon based on acoustic properties.
    • Recognizing refractive and reflective shadowing aids in differentiating artifacts from true pathology.
    • Understanding these mechanisms enhances diagnostic accuracy in ultrasound.

    Related Experiment Videos