A-line (ultrasound)
Citation, DOI, disclosures and article data
Citation:
Carroll D, Bell D, Haouimi A, A-line (ultrasound). Reference article, Radiopaedia.org (Accessed on 14 Dec 2024) https://doi.org/10.53347/rID-63388
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rID:
63388
Article created:
30 Sep 2018,
David Carroll
Disclosures:
At the time the article was created David Carroll had no recorded disclosures.
View David Carroll's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Daniel J Bell had no recorded disclosures.
View Daniel J Bell's current disclosures
Revisions:
3 times, by
3 contributors -
see full revision history and disclosures
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Synonyms:
- A line (US artifact)
- A lines (US artifact)
An A-line is an ultrasonographic artifact appreciated during the insonation of an aerated lung. 1
The term may be applied to the horizontal, echogenic long path reverberation artifacts that occur beneath the pleural line at multiples of the distance between the ultrasound probe and the visceral-parietal pleural interface which appear to fatigue as a function of depth. The artifact is hypothesized to result from sound reflecting between two parallel, closely apposed reflective surfaces 2.
References
- 1. Lichtenstein DA. BLUE-protocol and FALLS-protocol: two applications of lung ultrasound in the critically ill. (2015) Chest. 147 (6): 1659-1670. doi:10.1378/chest.14-1313 - Pubmed
- 2. Feldman MK, Katyal S, Blackwood MS. US artifacts. (2009) Radiographics : a review publication of the Radiological Society of North America, Inc. 29 (4): 1179-89. doi:10.1148/rg.294085199 - Pubmed
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