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Module title = Tutorial: Lung Ultrasound
Lesson title = Comet tails
This is lesson 4 of 8 in this module
Comet Tail Artifacts
comet tails are a normal finding
they are generated by the presence of the visceral pleura and parietal pleura interacting with each other to form a small reverberation artifact
comet tails move with respiration
comet tails will not erase A lines
comet tails disappear if there is a pneumothorax
Can you see the comet tails in the video (yellow ovals in the still image)?
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video/mp4
video/webm
Comet tails
and
B lines
are
similar
in the following ways. They both:
are hyperechoic (whiter)
start at pleura and travel "down" away from the probe
move with respiration
both are absent if there is a pneumothorax
Comet tails and B lines are
different
in that:
comet tails are very short, typically < 2 cm
B lines will extend to the bottom of the screen, > 20 cm
comet tails will not erase A lines. B lines will.
comet tails are a normal finding. B lines are abnormal
To help you compare, here is an example of B lines:
Your browser doesn't support video.
Please download the file:
video/mp4
video/webm
Lesson 4 of 8
That was the last lesson!
