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Uptodate Reference Title
Normal lung ultrasound with A lines
Normal lung ultrasound with A lines
This movie shows lung sliding at the pleural line. The top arrow indicates pleural line (sometimes described as "ants marching"). The bottom arrow indicates an A-line, a normal finding caused by a reverberation artifact from the highly reflective acoustic interface at the pleural line.
Courtesy of Joshua Zimmerman, MD, FASE, and Nathaniel Birgenheier, MD.
