Reverberation Artifact
- Equally spaced reflection artifact
- A lines – normal finding in lung US
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Reverberation
- Closely spaced repeating echoes
- Metallic elements, calcifications, cholesterol
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Comet Tail Artifact
- Dense tapering trail of reverberation artifact
- Metallic elements, calcifications, cholesterol
- Adenomyomatosis
- Benign condition of gallbladder
- Cholesterol deposits in wall
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Comet Tail Artifact
- Dense tapering trail of reverberation artifact
- Metallic elements, calcifications, cholesterol
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Ring down artifact
- Resonance from an air liquid interface
- From air (not calcium, metal, etc.)
- Can appear similar to comet tail
- Confusion in the literature
"B lines"
- Alveolar interstitial syndrome (AIS)
- Air - water -> artifact
- Pulmonary edema, others
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Ring down artifact
- Resonance from an air liquid interface
- From air (not calcium, metal, etc.)
- Pneumobilia
- Air in liver from gas forming organism in sepsis
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