Reverberation artifact
Last revised by Raymond Chieng on 24 Dec 2023
Citation, DOI, disclosures and article data
Citation:
Morgan M, Chieng R, Ranchod A, et al. Reverberation artifact. Reference article, Radiopaedia.org (Accessed on 15 Oct 2024) https://doi.org/10.53347/rID-31989
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rID:
31989
Article created:
9 Nov 2014,
Matt A. Morgan ◉
Disclosures:
At the time the article was created Matt A. Morgan had no recorded disclosures.
View Matt A. Morgan's current disclosures
Last revised:
24 Dec 2023,
Raymond Chieng ◉
Disclosures:
At the time the article was last revised Raymond Chieng had no financial relationships to ineligible companies to disclose.
View Raymond Chieng's current disclosures
Revisions:
18 times, by
15 contributors -
see full revision history and disclosures
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Synonyms:
- Reverberation artefact
- Reverberation artifacts
- Reverberation artefacts
Reverberation artifact occurs when an ultrasound beam encounters two strong parallel reflectors.
When the ultrasound beam reflects back and forth between the reflectors ("reverberates"), the ultrasound transducer interprets the sound waves returning as deeper structures since it took longer for the wave to return to the transducer.
Reverberation artifacts can be improved by changing the angle of insonation so that reverberation between strong parallel reflectors cannot occur.
Comet tail artifact is a type of reverberation artifact 3. This results in a short train of reverberations from an echogenic focus which has strong parallel reflectors within it (e.g. cholesterol crystals in adenomyomatosis). With comet tail artifact, the space between the two strong parallel reflectors may be less than 1/2 the spatial pulse length, causing the echoes to be displayed as triangular lines (the later echoes get attenuated and have a decreased amplitude, manifesting on the display as decreased width) 3.
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Practical points
Although sometimes grouped with reverberation due to similar appearances, ring down artifact does not arise from the same mechanism and should be considered separately 3.
See also
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References
- 1. Schmidt G. Ultrasound. Thieme. ISBN:1588905527. Read it at Google Books - Find it at Amazon
- 2. Middleton WD, Kurtz AB. Ultrasound. Mosby. (2004) ISBN:0323017029. Read it at Google Books - Find it at Amazon
- 3. Feldman MK, Katyal S, Blackwood MS. US artifacts. Radiographics. 2009;29 (4): 1179-89. doi:10.1148/rg.294085199 - Pubmed citation
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