Ultrasound.Guide
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Reverb Comets and Rings

  • Slide 1 of 6
  • 2
  • 3
  • 4
  • 5
  • 6

Reverberation Artifact

  • Equally spaced reflection artifact
  • A lines – normal finding in lung US

annotated ultrasound reverberation artifact



sensor position

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Reverberation

  • Closely spaced repeating echoes
  • Metallic elements, calcifications, cholesterol

annotated ultrasound retained needle foreign body reverberation artifact


         Continue          

Comet Tail Artifact

  • Dense tapering trail of reverberation artifact
  • Metallic elements, calcifications, cholesterol

annotated ultrasound comet tails artifact



  • 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

annotated ultrasound pacer wire comet tail artifact



annotated ultrasound comet tails artifact and sensor position

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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

annotated ultrasound comet tails artifact


"B lines"

  • Alveolar interstitial syndrome (AIS)
  • Air - water -> artifact
  • Pulmonary edema, others


         Continue          

Ring down artifact

  • Resonance from an air liquid interface
  • From air (not calcium, metal, etc.)

annotated ultrasound ring down from air artifact



  • Pneumobilia
  • Air in liver from gas forming organism in sepsis


         Continue           


Artifacts in Ultrasound

--- Table of Contents ---

Lesson NameMinutes id
Intro and Shadowing1
241
Edges and Mirrors1
242
Sidelobe1
243
Reverb Comets and Rings1 checkmark
244
Doppler and Summary1
245

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