Reverb Comets and Rings
Reverberation Artifact
- Equally spaced reflection artifact
- A lines – normal finding in lung US
Narration
Reverberation
- Closely spaced repeating echoes
- Metallic elements, calcifications, cholesterol
Narration
Comet Tail Artifact
- Dense tapering trail of reverberation artifact
- Metallic elements, calcifications, cholesterol
- Adenomyomatosis
- Benign condition of gallbladder
- Cholesterol deposits in wall
Narration
Comet Tail Artifact
- Dense tapering trail of reverberation artifact
- Metallic elements, calcifications, cholesterol
Narration
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
Narration
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
