Comet-tail artifact

The comet-tail artifact is a grey-scale ultrasound finding seen when small calcific / crystalline / highly reflective objects are interrogated and is believed to be a special form of reverberation artifact.

It is similar to the colour comet-tail artifact and is seen in similar situations, although is in general less sensitive than the latter.

Differential diagnosis

Possible considerations include:

See also

Physics and imaging technology: ultrasound
Ultrasound - general index
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Article information

rID: 9930
Section: Physics
Synonyms or Alternate Spellings:
  • Comet tail artefact
  • Comet tail artifact
  • Comet tail
  • Comet tails

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Cases and figures

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    Figure 1: comet-tail
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    Case 1: adenomyomatosis
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    Case 2: adenomyomatosis
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    Case 3: in a thyroid nodule
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    Case 4: thyroid colloid cyst
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